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2612 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
|---|---|---|---|---|---|
| CVE-2020-25669 | 3 Debian, Linux, Netapp | 21 Debian Linux, Linux Kernel, Cloud Backup and 18 more | 2022-05-13 | 7.2 HIGH | 7.8 HIGH |
| A vulnerability was found in the Linux Kernel where the function sunkbd_reinit having been scheduled by sunkbd_interrupt before sunkbd being freed. Though the dangling pointer is set to NULL in sunkbd_disconnect, there is still an alias in sunkbd_reinit causing Use After Free. | |||||
| CVE-2020-25670 | 4 Debian, Fedoraproject, Linux and 1 more | 23 Debian Linux, Fedora, Linux Kernel and 20 more | 2022-05-13 | 7.2 HIGH | 7.8 HIGH |
| A vulnerability was found in Linux Kernel where refcount leak in llcp_sock_bind() causing use-after-free which might lead to privilege escalations. | |||||
| CVE-2021-3483 | 3 Debian, Linux, Netapp | 19 Debian Linux, Linux Kernel, Cloud Backup and 16 more | 2022-05-13 | 4.6 MEDIUM | 7.8 HIGH |
| A flaw was found in the Nosy driver in the Linux kernel. This issue allows a device to be inserted twice into a doubly-linked list, leading to a use-after-free when one of these devices is removed. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Versions before kernel 5.12-rc6 are affected | |||||
| CVE-2021-32627 | 5 Debian, Fedoraproject, Netapp and 2 more | 6 Debian Linux, Fedora, Management Services For Element Software and 3 more | 2022-05-13 | 6.0 MEDIUM | 7.5 HIGH |
| Redis is an open source, in-memory database that persists on disk. In affected versions an integer overflow bug in Redis can be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves changing the default proto-max-bulk-len and client-query-buffer-limit configuration parameters to very large values and constructing specially crafted very large stream elements. The problem is fixed in Redis 6.2.6, 6.0.16 and 5.0.14. For users unable to upgrade an additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the proto-max-bulk-len configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command. | |||||
| CVE-2021-32762 | 5 Debian, Fedoraproject, Netapp and 2 more | 6 Debian Linux, Fedora, Management Services For Element Software and 3 more | 2022-05-13 | 9.0 HIGH | 8.8 HIGH |
| Redis is an open source, in-memory database that persists on disk. The redis-cli command line tool and redis-sentinel service may be vulnerable to integer overflow when parsing specially crafted large multi-bulk network replies. This is a result of a vulnerability in the underlying hiredis library which does not perform an overflow check before calling the calloc() heap allocation function. This issue only impacts systems with heap allocators that do not perform their own overflow checks. Most modern systems do and are therefore not likely to be affected. Furthermore, by default redis-sentinel uses the jemalloc allocator which is also not vulnerable. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. | |||||
| CVE-2021-32675 | 5 Debian, Fedoraproject, Netapp and 2 more | 6 Debian Linux, Fedora, Management Services For Element Software and 3 more | 2022-05-13 | 5.0 MEDIUM | 7.5 HIGH |
| Redis is an open source, in-memory database that persists on disk. When parsing an incoming Redis Standard Protocol (RESP) request, Redis allocates memory according to user-specified values which determine the number of elements (in the multi-bulk header) and size of each element (in the bulk header). An attacker delivering specially crafted requests over multiple connections can cause the server to allocate significant amount of memory. Because the same parsing mechanism is used to handle authentication requests, this vulnerability can also be exploited by unauthenticated users. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate this problem without patching the redis-server executable is to block access to prevent unauthenticated users from connecting to Redis. This can be done in different ways: Using network access control tools like firewalls, iptables, security groups, etc. or Enabling TLS and requiring users to authenticate using client side certificates. | |||||
| CVE-2021-32626 | 5 Debian, Fedoraproject, Netapp and 2 more | 6 Debian Linux, Fedora, Management Services For Element Software and 3 more | 2022-05-13 | 6.5 MEDIUM | 8.8 HIGH |
| Redis is an open source, in-memory database that persists on disk. In affected versions specially crafted Lua scripts executing in Redis can cause the heap-based Lua stack to be overflowed, due to incomplete checks for this condition. This can result with heap corruption and potentially remote code execution. This problem exists in all versions of Redis with Lua scripting support, starting from 2.6. The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14. For users unable to update an additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from executing Lua scripts. This can be done using ACL to restrict EVAL and EVALSHA commands. | |||||
| CVE-2021-32687 | 5 Debian, Fedoraproject, Netapp and 2 more | 6 Debian Linux, Fedora, Management Services For Element Software and 3 more | 2022-05-13 | 6.0 MEDIUM | 7.5 HIGH |
| Redis is an open source, in-memory database that persists on disk. An integer overflow bug affecting all versions of Redis can be exploited to corrupt the heap and potentially be used to leak arbitrary contents of the heap or trigger remote code execution. The vulnerability involves changing the default set-max-intset-entries configuration parameter to a very large value and constructing specially crafted commands to manipulate sets. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the set-max-intset-entries configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command. | |||||
| CVE-2021-36160 | 6 Apache, Broadcom, Debian and 3 more | 13 Http Server, Brocade Fabric Operating System Firmware, Debian Linux and 10 more | 2022-05-13 | 5.0 MEDIUM | 7.5 HIGH |
| A carefully crafted request uri-path can cause mod_proxy_uwsgi to read above the allocated memory and crash (DoS). This issue affects Apache HTTP Server versions 2.4.30 to 2.4.48 (inclusive). | |||||
| CVE-2022-21449 | 3 Debian, Netapp, Oracle | 15 Debian Linux, 7-mode Transition Tool, Active Iq Unified Manager and 12 more | 2022-05-13 | 5.0 MEDIUM | 7.5 HIGH |
| Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Libraries). Supported versions that are affected are Oracle Java SE: 17.0.2 and 18; Oracle GraalVM Enterprise Edition: 21.3.1 and 22.0.0.2. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Java SE, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability can also be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. CVSS 3.1 Base Score 7.5 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N). | |||||
| CVE-2021-3748 | 5 Canonical, Debian, Fedoraproject and 2 more | 6 Ubuntu Linux, Debian Linux, Fedora and 3 more | 2022-05-13 | 7.2 HIGH | 8.8 HIGH |
| A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process. | |||||
| CVE-2020-15078 | 4 Canonical, Debian, Fedoraproject and 1 more | 4 Ubuntu Linux, Debian Linux, Fedora and 1 more | 2022-05-12 | 5.0 MEDIUM | 7.5 HIGH |
| OpenVPN 2.5.1 and earlier versions allows a remote attackers to bypass authentication and access control channel data on servers configured with deferred authentication, which can be used to potentially trigger further information leaks. | |||||
| CVE-2018-14337 | 2 Debian, Mruby | 2 Debian Linux, Mruby | 2022-05-12 | 5.0 MEDIUM | 7.5 HIGH |
| The CHECK macro in mrbgems/mruby-sprintf/src/sprintf.c in mruby 1.4.1 contains a signed integer overflow, possibly leading to out-of-bounds memory access because the mrb_str_resize function in string.c does not check for a negative length. | |||||
| CVE-2018-12249 | 2 Debian, Mruby | 2 Debian Linux, Mruby | 2022-05-12 | 5.0 MEDIUM | 7.5 HIGH |
| An issue was discovered in mruby 1.4.1. There is a NULL pointer dereference in mrb_class_real because "class BasicObject" is not properly supported in class.c. | |||||
| CVE-2017-9527 | 2 Debian, Mruby | 2 Debian Linux, Mruby | 2022-05-12 | 6.8 MEDIUM | 7.8 HIGH |
| The mark_context_stack function in gc.c in mruby through 1.2.0 allows attackers to cause a denial of service (heap-based use-after-free and application crash) or possibly have unspecified other impact via a crafted .rb file. | |||||
| CVE-2020-6097 | 3 Atftp Project, Debian, Opensuse | 3 Atftp, Debian Linux, Leap | 2022-05-12 | 5.0 MEDIUM | 7.5 HIGH |
| An exploitable denial of service vulnerability exists in the atftpd daemon functionality of atftp 0.7.git20120829-3.1+b1. A specially crafted sequence of RRQ-Multicast requests trigger an assert() call resulting in denial-of-service. An attacker can send a sequence of malicious packets to trigger this vulnerability. | |||||
| CVE-2020-13935 | 7 Apache, Canonical, Debian and 4 more | 18 Tomcat, Ubuntu Linux, Debian Linux and 15 more | 2022-05-12 | 5.0 MEDIUM | 7.5 HIGH |
| The payload length in a WebSocket frame was not correctly validated in Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M1 to 9.0.36, 8.5.0 to 8.5.56 and 7.0.27 to 7.0.104. Invalid payload lengths could trigger an infinite loop. Multiple requests with invalid payload lengths could lead to a denial of service. | |||||
| CVE-2020-11080 | 5 Debian, Fedoraproject, Nghttp2 and 2 more | 9 Debian Linux, Fedora, Nghttp2 and 6 more | 2022-05-12 | 5.0 MEDIUM | 7.5 HIGH |
| In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection. | |||||
| CVE-2020-26217 | 5 Apache, Debian, Netapp and 2 more | 15 Activemq, Debian Linux, Snapmanager and 12 more | 2022-05-12 | 9.3 HIGH | 8.8 HIGH |
| XStream before version 1.4.14 is vulnerable to Remote Code Execution.The vulnerability may allow a remote attacker to run arbitrary shell commands only by manipulating the processed input stream. Only users who rely on blocklists are affected. Anyone using XStream's Security Framework allowlist is not affected. The linked advisory provides code workarounds for users who cannot upgrade. The issue is fixed in version 1.4.14. | |||||
| CVE-2020-29363 | 3 Debian, Oracle, P11-kit Project | 3 Debian Linux, Communications Cloud Native Core Policy, P11-kit | 2022-05-12 | 5.0 MEDIUM | 7.5 HIGH |
| An issue was discovered in p11-kit 0.23.6 through 0.23.21. A heap-based buffer overflow has been discovered in the RPC protocol used by p11-kit server/remote commands and the client library. When the remote entity supplies a serialized byte array in a CK_ATTRIBUTE, the receiving entity may not allocate sufficient length for the buffer to store the deserialized value. | |||||
| CVE-2020-17527 | 4 Apache, Debian, Netapp and 1 more | 12 Tomcat, Debian Linux, Element Plug-in and 9 more | 2022-05-12 | 5.0 MEDIUM | 7.5 HIGH |
| While investigating bug 64830 it was discovered that Apache Tomcat 10.0.0-M1 to 10.0.0-M9, 9.0.0-M1 to 9.0.39 and 8.5.0 to 8.5.59 could re-use an HTTP request header value from the previous stream received on an HTTP/2 connection for the request associated with the subsequent stream. While this would most likely lead to an error and the closure of the HTTP/2 connection, it is possible that information could leak between requests. | |||||
| CVE-2020-24750 | 3 Debian, Fasterxml, Oracle | 26 Debian Linux, Jackson-databind, Agile Plm and 23 more | 2022-05-12 | 6.8 MEDIUM | 8.1 HIGH |
| FasterXML jackson-databind 2.x before 2.9.10.6 mishandles the interaction between serialization gadgets and typing, related to com.pastdev.httpcomponents.configuration.JndiConfiguration. | |||||
| CVE-2020-24616 | 4 Debian, Fasterxml, Netapp and 1 more | 25 Debian Linux, Jackson-databind, Active Iq Unified Manager and 22 more | 2022-05-12 | 6.8 MEDIUM | 8.1 HIGH |
| FasterXML jackson-databind 2.x before 2.9.10.6 mishandles the interaction between serialization gadgets and typing, related to br.com.anteros.dbcp.AnterosDBCPDataSource (aka Anteros-DBCP). | |||||
| CVE-2020-13936 | 3 Apache, Debian, Oracle | 16 Velocity Engine, Wss4j, Debian Linux and 13 more | 2022-05-12 | 9.0 HIGH | 8.8 HIGH |
| An attacker that is able to modify Velocity templates may execute arbitrary Java code or run arbitrary system commands with the same privileges as the account running the Servlet container. This applies to applications that allow untrusted users to upload/modify velocity templates running Apache Velocity Engine versions up to 2.2. | |||||
| CVE-2021-23840 | 6 Debian, Fujitsu, Mcafee and 3 more | 26 Debian Linux, M10-1, M10-1 Firmware and 23 more | 2022-05-12 | 5.0 MEDIUM | 7.5 HIGH |
| Calls to EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate may overflow the output length argument in some cases where the input length is close to the maximum permissable length for an integer on the platform. In such cases the return value from the function call will be 1 (indicating success), but the output length value will be negative. This could cause applications to behave incorrectly or crash. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x). | |||||
| CVE-2018-15501 | 2 Debian, Libgit2 | 2 Debian Linux, Libgit2 | 2022-05-11 | 5.0 MEDIUM | 7.5 HIGH |
| In ng_pkt in transports/smart_pkt.c in libgit2 before 0.26.6 and 0.27.x before 0.27.4, a remote attacker can send a crafted smart-protocol "ng" packet that lacks a '\0' byte to trigger an out-of-bounds read that leads to DoS. | |||||
| CVE-2021-4207 | 3 Debian, Qemu, Redhat | 3 Debian Linux, Qemu, Enterprise Linux | 2022-05-10 | 4.6 MEDIUM | 8.8 HIGH |
| A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values `cursor->header.width` and `cursor->header.height` can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process. | |||||
| CVE-2021-4206 | 3 Debian, Qemu, Redhat | 3 Debian Linux, Qemu, Enterprise Linux | 2022-05-10 | 4.6 MEDIUM | 8.2 HIGH |
| A flaw was found in the QXL display device emulation in QEMU. An integer overflow in the cursor_alloc() function can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. This flaw allows a malicious privileged guest user to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process. | |||||
| CVE-2021-33034 | 3 Debian, Fedoraproject, Linux | 3 Debian Linux, Fedora, Linux Kernel | 2022-05-08 | 4.6 MEDIUM | 7.8 HIGH |
| In the Linux kernel before 5.12.4, net/bluetooth/hci_event.c has a use-after-free when destroying an hci_chan, aka CID-5c4c8c954409. This leads to writing an arbitrary value. | |||||
| CVE-2021-41819 | 6 Debian, Fedoraproject, Opensuse and 3 more | 9 Debian Linux, Fedora, Factory and 6 more | 2022-05-08 | 5.0 MEDIUM | 7.5 HIGH |
| CGI::Cookie.parse in Ruby through 2.6.8 mishandles security prefixes in cookie names. This also affects the CGI gem through 0.3.0 for Ruby. | |||||
| CVE-2021-27229 | 2 Debian, Mumble | 2 Debian Linux, Mumble | 2022-05-06 | 6.8 MEDIUM | 8.8 HIGH |
| Mumble before 1.3.4 allows remote code execution if a victim navigates to a crafted URL on a server list and clicks on the Open Webpage text. | |||||
| CVE-2019-25059 | 2 Artifex, Debian | 2 Ghostscript, Debian Linux | 2022-05-04 | 6.8 MEDIUM | 7.8 HIGH |
| Artifex Ghostscript through 9.26 mishandles .completefont. NOTE: this issue exists because of an incomplete fix for CVE-2019-3839. | |||||
| CVE-2021-33285 | 4 Debian, Fedoraproject, Redhat and 1 more | 4 Debian Linux, Fedora, Enterprise Linux and 1 more | 2022-05-03 | 6.9 MEDIUM | 7.8 HIGH |
| In NTFS-3G versions < 2021.8.22, when a specially crafted NTFS attribute is supplied to the function ntfs_get_attribute_value, a heap buffer overflow can occur allowing for memory disclosure or denial of service. The vulnerability is caused by an out-of-bound buffer access which can be triggered by mounting a crafted ntfs partition. The root cause is a missing consistency check after reading an MFT record : the "bytes_in_use" field should be less than the "bytes_allocated" field. When it is not, the parsing of the records proceeds into the wild. | |||||
| CVE-2021-27928 | 4 Debian, Galeracluster, Mariadb and 1 more | 4 Debian Linux, Wsrep, Mariadb and 1 more | 2022-05-03 | 9.0 HIGH | 7.2 HIGH |
| A remote code execution issue was discovered in MariaDB 10.2 before 10.2.37, 10.3 before 10.3.28, 10.4 before 10.4.18, and 10.5 before 10.5.9; Percona Server through 2021-03-03; and the wsrep patch through 2021-03-03 for MySQL. An untrusted search path leads to eval injection, in which a database SUPER user can execute OS commands after modifying wsrep_provider and wsrep_notify_cmd. NOTE: this does not affect an Oracle product. | |||||
| CVE-2021-31598 | 2 Debian, Ezxml Project | 2 Debian Linux, Ezxml | 2022-05-03 | 5.0 MEDIUM | 7.5 HIGH |
| An issue was discovered in libezxml.a in ezXML 0.8.6. The function ezxml_decode() performs incorrect memory handling while parsing crafted XML files, leading to a heap-based buffer overflow. | |||||
| CVE-2019-10895 | 5 Canonical, Debian, Fedoraproject and 2 more | 5 Ubuntu Linux, Debian Linux, Fedora and 2 more | 2022-05-03 | 5.0 MEDIUM | 7.5 HIGH |
| In Wireshark 2.4.0 to 2.4.13, 2.6.0 to 2.6.7, and 3.0.0, the NetScaler file parser could crash. This was addressed in wiretap/netscaler.c by improving data validation. | |||||
| CVE-2019-10899 | 5 Canonical, Debian, Fedoraproject and 2 more | 5 Ubuntu Linux, Debian Linux, Fedora and 2 more | 2022-05-03 | 5.0 MEDIUM | 7.5 HIGH |
| In Wireshark 2.4.0 to 2.4.13, 2.6.0 to 2.6.7, and 3.0.0, the SRVLOC dissector could crash. This was addressed in epan/dissectors/packet-srvloc.c by preventing a heap-based buffer under-read. | |||||
| CVE-2019-7310 | 5 Canonical, Debian, Fedoraproject and 2 more | 11 Ubuntu Linux, Debian Linux, Fedora and 8 more | 2022-05-03 | 6.8 MEDIUM | 7.8 HIGH |
| In Poppler 0.73.0, a heap-based buffer over-read (due to an integer signedness error in the XRef::getEntry function in XRef.cc) allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted PDF document, as demonstrated by pdftocairo. | |||||
| CVE-2020-6448 | 4 Debian, Fedoraproject, Google and 1 more | 5 Debian Linux, Fedora, Chrome and 2 more | 2022-05-03 | 6.8 MEDIUM | 8.8 HIGH |
| Use after free in V8 in Google Chrome prior to 81.0.4044.92 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. | |||||
| CVE-2019-18848 | 2 Debian, Json-jwt Project | 2 Debian Linux, Json-jwt | 2022-05-03 | 5.0 MEDIUM | 7.5 HIGH |
| The json-jwt gem before 1.11.0 for Ruby lacks an element count during the splitting of a JWE string. | |||||
| CVE-2019-1010057 | 3 Debian, Fedoraproject, Nfdump Project | 3 Debian Linux, Fedora, Nfdump | 2022-05-03 | 6.8 MEDIUM | 7.8 HIGH |
| nfdump 1.6.16 and earlier is affected by: Buffer Overflow. The impact is: The impact could range from a denial of service to local code execution. The component is: nfx.c:546, nffile_inline.c:83, minilzo.c (redistributed). The attack vector is: nfdump must read and process a specially crafted file. The fixed version is: after commit 9f0fe9563366f62a71d34c92229da3432ec5cf0e. | |||||
| CVE-2019-12295 | 4 Canonical, Debian, F5 and 1 more | 16 Ubuntu Linux, Debian Linux, Big-ip Access Policy Manager and 13 more | 2022-05-03 | 5.0 MEDIUM | 7.5 HIGH |
| In Wireshark 3.0.0 to 3.0.1, 2.6.0 to 2.6.8, and 2.4.0 to 2.4.14, the dissection engine could crash. This was addressed in epan/packet.c by restricting the number of layers and consequently limiting recursion. | |||||
| CVE-2020-11741 | 4 Debian, Fedoraproject, Opensuse and 1 more | 4 Debian Linux, Fedora, Leap and 1 more | 2022-05-03 | 6.9 MEDIUM | 8.8 HIGH |
| An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (with active profiling) to obtain sensitive information about other guests, cause a denial of service, or possibly gain privileges. For guests for which "active" profiling was enabled by the administrator, the xenoprof code uses the standard Xen shared ring structure. Unfortunately, this code did not treat the guest as a potential adversary: it trusts the guest not to modify buffer size information or modify head / tail pointers in unexpected ways. This can crash the host (DoS). Privilege escalation cannot be ruled out. | |||||
| CVE-2020-11739 | 4 Debian, Fedoraproject, Opensuse and 1 more | 4 Debian Linux, Fedora, Leap and 1 more | 2022-05-03 | 6.9 MEDIUM | 7.8 HIGH |
| An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause a denial of service or possibly gain privileges because of missing memory barriers in read-write unlock paths. The read-write unlock paths don't contain a memory barrier. On Arm, this means a processor is allowed to re-order the memory access with the preceding ones. In other words, the unlock may be seen by another processor before all the memory accesses within the "critical" section. As a consequence, it may be possible to have a writer executing a critical section at the same time as readers or another writer. In other words, many of the assumptions (e.g., a variable cannot be modified after a check) in the critical sections are not safe anymore. The read-write locks are used in hypercalls (such as grant-table ones), so a malicious guest could exploit the race. For instance, there is a small window where Xen can leak memory if XENMAPSPACE_grant_table is used concurrently. A malicious guest may be able to leak memory, or cause a hypervisor crash resulting in a Denial of Service (DoS). Information leak and privilege escalation cannot be excluded. | |||||
| CVE-2020-6454 | 4 Debian, Fedoraproject, Google and 1 more | 5 Debian Linux, Fedora, Chrome and 2 more | 2022-05-03 | 6.8 MEDIUM | 8.8 HIGH |
| Use after free in extensions in Google Chrome prior to 81.0.4044.92 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension. | |||||
| CVE-2020-15567 | 4 Debian, Fedoraproject, Opensuse and 1 more | 4 Debian Linux, Fedora, Leap and 1 more | 2022-05-03 | 4.4 MEDIUM | 7.8 HIGH |
| An issue was discovered in Xen through 4.13.x, allowing Intel guest OS users to gain privileges or cause a denial of service because of non-atomic modification of a live EPT PTE. When mapping guest EPT (nested paging) tables, Xen would in some circumstances use a series of non-atomic bitfield writes. Depending on the compiler version and optimisation flags, Xen might expose a dangerous partially written PTE to the hardware, which an attacker might be able to race to exploit. A guest administrator or perhaps even an unprivileged guest user might be able to cause denial of service, data corruption, or privilege escalation. Only systems using Intel CPUs are vulnerable. Systems using AMD CPUs, and Arm systems, are not vulnerable. Only systems using nested paging (hap, aka nested paging, aka in this case Intel EPT) are vulnerable. Only HVM and PVH guests can exploit the vulnerability. The presence and scope of the vulnerability depends on the precise optimisations performed by the compiler used to build Xen. If the compiler generates (a) a single 64-bit write, or (b) a series of read-modify-write operations in the same order as the source code, the hypervisor is not vulnerable. For example, in one test build using GCC 8.3 with normal settings, the compiler generated multiple (unlocked) read-modify-write operations in source-code order, which did not constitute a vulnerability. We have not been able to survey compilers; consequently we cannot say which compiler(s) might produce vulnerable code (with which code-generation options). The source code clearly violates the C rules, and thus should be considered vulnerable. | |||||
| CVE-2022-23607 | 2 Debian, Twistedmatrix | 2 Debian Linux, Treq | 2022-05-01 | 4.3 MEDIUM | 7.4 HIGH |
| treq is an HTTP library inspired by requests but written on top of Twisted's Agents. Treq's request methods (`treq.get`, `treq.post`, etc.) and `treq.client.HTTPClient` constructor accept cookies as a dictionary. Such cookies are not bound to a single domain, and are therefore sent to *every* domain ("supercookies"). This can potentially cause sensitive information to leak upon an HTTP redirect to a different domain., e.g. should `https://example.com` redirect to `http://cloudstorageprovider.com` the latter will receive the cookie `session`. Treq 2021.1.0 and later bind cookies given to request methods (`treq.request`, `treq.get`, `HTTPClient.request`, `HTTPClient.get`, etc.) to the origin of the *url* parameter. Users are advised to upgrade. For users unable to upgrade Instead of passing a dictionary as the *cookies* argument, pass a `http.cookiejar.CookieJar` instance with properly domain- and scheme-scoped cookies in it. | |||||
| CVE-2020-36230 | 4 Apache, Apple, Debian and 1 more | 5 Bookkeeper, Mac Os X, Macos and 2 more | 2022-04-30 | 5.0 MEDIUM | 7.5 HIGH |
| A flaw was discovered in OpenLDAP before 2.4.57 leading in an assertion failure in slapd in the X.509 DN parsing in decode.c ber_next_element, resulting in denial of service. | |||||
| CVE-2020-25671 | 4 Debian, Fedoraproject, Linux and 1 more | 23 Debian Linux, Fedora, Linux Kernel and 20 more | 2022-04-29 | 7.2 HIGH | 7.8 HIGH |
| A vulnerability was found in Linux Kernel, where a refcount leak in llcp_sock_connect() causing use-after-free which might lead to privilege escalations. | |||||
| CVE-2020-25672 | 4 Debian, Fedoraproject, Linux and 1 more | 23 Debian Linux, Fedora, Linux Kernel and 20 more | 2022-04-29 | 5.0 MEDIUM | 7.5 HIGH |
| A memory leak vulnerability was found in Linux kernel in llcp_sock_connect | |||||