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6968 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
|---|---|---|---|---|---|
| CVE-2019-17498 | 4 Debian, Fedoraproject, Libssh2 and 1 more | 4 Debian Linux, Fedora, Libssh2 and 1 more | 2021-12-18 | 5.8 MEDIUM | 8.1 HIGH |
| In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server. | |||||
| CVE-2021-40490 | 4 Debian, Fedoraproject, Linux and 1 more | 29 Debian Linux, Fedora, Linux Kernel and 26 more | 2021-12-17 | 4.4 MEDIUM | 7.0 HIGH |
| A race condition was discovered in ext4_write_inline_data_end in fs/ext4/inline.c in the ext4 subsystem in the Linux kernel through 5.13.13. | |||||
| CVE-2021-39365 | 2 Debian, Gnome | 2 Debian Linux, Grilo | 2021-12-16 | 4.3 MEDIUM | 5.9 MEDIUM |
| In GNOME grilo though 0.3.13, grl-net-wc.c does not enable TLS certificate verification on the SoupSessionAsync objects it creates, leaving users vulnerable to network MITM attacks. NOTE: this is similar to CVE-2016-20011. | |||||
| CVE-2021-32728 | 2 Debian, Nextcloud | 2 Debian Linux, Nextcloud | 2021-12-16 | 4.0 MEDIUM | 6.5 MEDIUM |
| The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server with a computer. Clients using the Nextcloud end-to-end encryption feature download the public and private key via an API endpoint. In versions prior to 3.3.0, the Nextcloud Desktop client fails to check if a private key belongs to previously downloaded public certificate. If the Nextcloud instance serves a malicious public key, the data would be encrypted for this key and thus could be accessible to a malicious actor. This issue is fixed in Nextcloud Desktop Client version 3.3.0. There are no known workarounds aside from upgrading. | |||||
| CVE-2021-28699 | 3 Debian, Fedoraproject, Xen | 3 Debian Linux, Fedora, Xen | 2021-12-16 | 4.9 MEDIUM | 5.5 MEDIUM |
| inadequate grant-v2 status frames array bounds check The v2 grant table interface separates grant attributes from grant status. That is, when operating in this mode, a guest has two tables. As a result, guests also need to be able to retrieve the addresses that the new status tracking table can be accessed through. For 32-bit guests on x86, translation of requests has to occur because the interface structure layouts commonly differ between 32- and 64-bit. The translation of the request to obtain the frame numbers of the grant status table involves translating the resulting array of frame numbers. Since the space used to carry out the translation is limited, the translation layer tells the core function the capacity of the array within translation space. Unfortunately the core function then only enforces array bounds to be below 8 times the specified value, and would write past the available space if enough frame numbers needed storing. | |||||
| CVE-2021-29447 | 2 Debian, Wordpress | 2 Debian Linux, Wordpress | 2021-12-16 | 4.0 MEDIUM | 6.5 MEDIUM |
| Wordpress is an open source CMS. A user with the ability to upload files (like an Author) can exploit an XML parsing issue in the Media Library leading to XXE attacks. This requires WordPress installation to be using PHP 8. Access to internal files is possible in a successful XXE attack. This has been patched in WordPress version 5.7.1, along with the older affected versions via a minor release. We strongly recommend you keep auto-updates enabled. | |||||
| CVE-2021-28698 | 3 Debian, Fedoraproject, Xen | 3 Debian Linux, Fedora, Xen | 2021-12-16 | 4.9 MEDIUM | 5.5 MEDIUM |
| long running loops in grant table handling In order to properly monitor resource use, Xen maintains information on the grant mappings a domain may create to map grants offered by other domains. In the process of carrying out certain actions, Xen would iterate over all such entries, including ones which aren't in use anymore and some which may have been created but never used. If the number of entries for a given domain is large enough, this iterating of the entire table may tie up a CPU for too long, starving other domains or causing issues in the hypervisor itself. Note that a domain may map its own grants, i.e. there is no need for multiple domains to be involved here. A pair of "cooperating" guests may, however, cause the effects to be more severe. | |||||
| CVE-2018-20721 | 2 Debian, Uriparser Project | 2 Debian Linux, Uriparser | 2021-12-16 | 7.5 HIGH | 9.8 CRITICAL |
| URI_FUNC() in UriParse.c in uriparser before 0.9.1 has an out-of-bounds read (in uriParse*Ex* functions) for an incomplete URI with an IPv6 address containing an embedded IPv4 address, such as a "//[::44.1" address. | |||||
| CVE-2018-14653 | 2 Debian, Redhat | 4 Debian Linux, Enterprise Linux Server, Enterprise Linux Virtualization and 1 more | 2021-12-16 | 6.5 MEDIUM | 8.8 HIGH |
| The Gluster file system through versions 4.1.4 and 3.12 is vulnerable to a heap-based buffer overflow in the '__server_getspec' function via the 'gf_getspec_req' RPC message. A remote authenticated attacker could exploit this to cause a denial of service or other potential unspecified impact. | |||||
| CVE-2018-10907 | 4 Debian, Gluster, Opensuse and 1 more | 5 Debian Linux, Glusterfs, Leap and 2 more | 2021-12-16 | 6.5 MEDIUM | 8.8 HIGH |
| It was found that glusterfs server is vulnerable to multiple stack based buffer overflows due to functions in server-rpc-fopc.c allocating fixed size buffers using 'alloca(3)'. An authenticated attacker could exploit this by mounting a gluster volume and sending a string longer that the fixed buffer size to cause crash or potential code execution. | |||||
| CVE-2018-5764 | 3 Canonical, Debian, Samba | 3 Ubuntu Linux, Debian Linux, Rsync | 2021-12-16 | 5.0 MEDIUM | 7.5 HIGH |
| The parse_arguments function in options.c in rsyncd in rsync before 3.1.3 does not prevent multiple --protect-args uses, which allows remote attackers to bypass an argument-sanitization protection mechanism. | |||||
| CVE-2017-17760 | 2 Debian, Opencv | 2 Debian Linux, Opencv | 2021-12-16 | 4.3 MEDIUM | 6.5 MEDIUM |
| OpenCV 3.3.1 has a Buffer Overflow in the cv::PxMDecoder::readData function in grfmt_pxm.cpp, because an incorrect size value is used. | |||||
| CVE-2017-9525 | 3 Canonical, Cron Project, Debian | 3 Ubuntu Linux, Cron, Debian Linux | 2021-12-16 | 6.9 MEDIUM | 6.7 MEDIUM |
| In the cron package through 3.0pl1-128 on Debian, and through 3.0pl1-128ubuntu2 on Ubuntu, the postinst maintainer script allows for group-crontab-to-root privilege escalation via symlink attacks against unsafe usage of the chown and chmod programs. | |||||
| CVE-2016-1516 | 2 Debian, Opencv | 2 Debian Linux, Opencv | 2021-12-16 | 6.8 MEDIUM | 8.8 HIGH |
| OpenCV 3.0.0 has a double free issue that allows attackers to execute arbitrary code. | |||||
| CVE-2016-0746 | 5 Apple, Canonical, Debian and 2 more | 5 Xcode, Ubuntu Linux, Debian Linux and 2 more | 2021-12-16 | 7.5 HIGH | 9.8 CRITICAL |
| Use-after-free vulnerability in the resolver in nginx 0.6.18 through 1.8.0 and 1.9.x before 1.9.10 allows remote attackers to cause a denial of service (worker process crash) or possibly have unspecified other impact via a crafted DNS response related to CNAME response processing. | |||||
| CVE-2016-0747 | 5 Apple, Canonical, Debian and 2 more | 5 Xcode, Ubuntu Linux, Debian Linux and 2 more | 2021-12-16 | 5.0 MEDIUM | 5.3 MEDIUM |
| The resolver in nginx before 1.8.1 and 1.9.x before 1.9.10 does not properly limit CNAME resolution, which allows remote attackers to cause a denial of service (worker process resource consumption) via vectors related to arbitrary name resolution. | |||||
| CVE-2021-28706 | 3 Debian, Fedoraproject, Xen | 3 Debian Linux, Fedora, Xen | 2021-12-16 | 7.8 HIGH | 8.6 HIGH |
| guests may exceed their designated memory limit When a guest is permitted to have close to 16TiB of memory, it may be able to issue hypercalls to increase its memory allocation beyond the administrator established limit. This is a result of a calculation done with 32-bit precision, which may overflow. It would then only be the overflowed (and hence small) number which gets compared against the established upper bound. | |||||
| CVE-2021-44025 | 3 Debian, Fedoraproject, Roundcube | 3 Debian Linux, Fedora, Webmail | 2021-12-16 | 4.3 MEDIUM | 6.1 MEDIUM |
| Roundcube before 1.3.17 and 1.4.x before 1.4.12 is prone to XSS in handling an attachment's filename extension when displaying a MIME type warning message. | |||||
| CVE-2021-44026 | 3 Debian, Fedoraproject, Roundcube | 3 Debian Linux, Fedora, Webmail | 2021-12-16 | 7.5 HIGH | 9.8 CRITICAL |
| Roundcube before 1.3.17 and 1.4.x before 1.4.12 is prone to a potential SQL injection via search or search_params. | |||||
| CVE-2021-43618 | 2 Debian, Gmplib | 2 Debian Linux, Gmp | 2021-12-16 | 5.0 MEDIUM | 7.5 HIGH |
| GNU Multiple Precision Arithmetic Library (GMP) through 6.2.1 has an mpz/inp_raw.c integer overflow and resultant buffer overflow via crafted input, leading to a segmentation fault on 32-bit platforms. | |||||
| CVE-2021-28702 | 3 Debian, Fedoraproject, Xen | 3 Debian Linux, Fedora, Xen | 2021-12-16 | 4.6 MEDIUM | 7.6 HIGH |
| PCI devices with RMRRs not deassigned correctly Certain PCI devices in a system might be assigned Reserved Memory Regions (specified via Reserved Memory Region Reporting, "RMRR"). These are typically used for platform tasks such as legacy USB emulation. If such a device is passed through to a guest, then on guest shutdown the device is not properly deassigned. The IOMMU configuration for these devices which are not properly deassigned ends up pointing to a freed data structure, including the IO Pagetables. Subsequent DMA or interrupts from the device will have unpredictable behaviour, ranging from IOMMU faults to memory corruption. | |||||
| CVE-2021-28707 | 3 Debian, Fedoraproject, Xen | 3 Debian Linux, Fedora, Xen | 2021-12-15 | 6.9 MEDIUM | 8.8 HIGH |
| PoD operations on misaligned GFNs T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned. Guests are permitted to control certain P2M aspects of individual pages via hypercalls. These hypercalls may act on ranges of pages specified via page orders (resulting in a power-of-2 number of pages). The implementation of some of these hypercalls for PoD does not enforce the base page frame number to be suitably aligned for the specified order, yet some code involved in PoD handling actually makes such an assumption. These operations are XENMEM_decrease_reservation (CVE-2021-28704) and XENMEM_populate_physmap (CVE-2021-28707), the latter usable only by domains controlling the guest, i.e. a de-privileged qemu or a stub domain. (Patch 1, combining the fix to both these two issues.) In addition handling of XENMEM_decrease_reservation can also trigger a host crash when the specified page order is neither 4k nor 2M nor 1G (CVE-2021-28708, patch 2). | |||||
| CVE-2021-28704 | 3 Debian, Fedoraproject, Xen | 3 Debian Linux, Fedora, Xen | 2021-12-15 | 6.9 MEDIUM | 8.8 HIGH |
| PoD operations on misaligned GFNs T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned. Guests are permitted to control certain P2M aspects of individual pages via hypercalls. These hypercalls may act on ranges of pages specified via page orders (resulting in a power-of-2 number of pages). The implementation of some of these hypercalls for PoD does not enforce the base page frame number to be suitably aligned for the specified order, yet some code involved in PoD handling actually makes such an assumption. These operations are XENMEM_decrease_reservation (CVE-2021-28704) and XENMEM_populate_physmap (CVE-2021-28707), the latter usable only by domains controlling the guest, i.e. a de-privileged qemu or a stub domain. (Patch 1, combining the fix to both these two issues.) In addition handling of XENMEM_decrease_reservation can also trigger a host crash when the specified page order is neither 4k nor 2M nor 1G (CVE-2021-28708, patch 2). | |||||
| CVE-2021-28708 | 3 Debian, Fedoraproject, Xen | 3 Debian Linux, Fedora, Xen | 2021-12-15 | 6.9 MEDIUM | 8.8 HIGH |
| PoD operations on misaligned GFNs T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned. Guests are permitted to control certain P2M aspects of individual pages via hypercalls. These hypercalls may act on ranges of pages specified via page orders (resulting in a power-of-2 number of pages). The implementation of some of these hypercalls for PoD does not enforce the base page frame number to be suitably aligned for the specified order, yet some code involved in PoD handling actually makes such an assumption. These operations are XENMEM_decrease_reservation (CVE-2021-28704) and XENMEM_populate_physmap (CVE-2021-28707), the latter usable only by domains controlling the guest, i.e. a de-privileged qemu or a stub domain. (Patch 1, combining the fix to both these two issues.) In addition handling of XENMEM_decrease_reservation can also trigger a host crash when the specified page order is neither 4k nor 2M nor 1G (CVE-2021-28708, patch 2). | |||||
| CVE-2016-0742 | 6 Apple, Canonical, Debian and 3 more | 6 Xcode, Ubuntu Linux, Debian Linux and 3 more | 2021-12-15 | 5.0 MEDIUM | 7.5 HIGH |
| The resolver in nginx before 1.8.1 and 1.9.x before 1.9.10 allows remote attackers to cause a denial of service (invalid pointer dereference and worker process crash) via a crafted UDP DNS response. | |||||
| CVE-2015-6855 | 6 Arista, Canonical, Debian and 3 more | 7 Eos, Ubuntu Linux, Debian Linux and 4 more | 2021-12-15 | 5.0 MEDIUM | 7.5 HIGH |
| hw/ide/core.c in QEMU does not properly restrict the commands accepted by an ATAPI device, which allows guest users to cause a denial of service or possibly have unspecified other impact via certain IDE commands, as demonstrated by a WIN_READ_NATIVE_MAX command to an empty drive, which triggers a divide-by-zero error and instance crash. | |||||
| CVE-2018-10841 | 2 Debian, Gluster | 2 Debian Linux, Glusterfs | 2021-12-15 | 6.5 MEDIUM | 8.8 HIGH |
| glusterfs is vulnerable to privilege escalation on gluster server nodes. An authenticated gluster client via TLS could use gluster cli with --remote-host command to add it self to trusted storage pool and perform privileged gluster operations like adding other machines to trusted storage pool, start, stop, and delete volumes. | |||||
| CVE-2019-3900 | 7 Canonical, Debian, Fedoraproject and 4 more | 15 Ubuntu Linux, Debian Linux, Fedora and 12 more | 2021-12-15 | 6.8 MEDIUM | 7.7 HIGH |
| An infinite loop issue was found in the vhost_net kernel module in Linux Kernel up to and including v5.1-rc6, while handling incoming packets in handle_rx(). It could occur if one end sends packets faster than the other end can process them. A guest user, maybe remote one, could use this flaw to stall the vhost_net kernel thread, resulting in a DoS scenario. | |||||
| CVE-2021-39926 | 3 Debian, Fedoraproject, Wireshark | 3 Debian Linux, Fedora, Wireshark | 2021-12-15 | 5.0 MEDIUM | 7.5 HIGH |
| Buffer overflow in the Bluetooth HCI_ISO dissector in Wireshark 3.4.0 to 3.4.9 allows denial of service via packet injection or crafted capture file | |||||
| CVE-2021-44143 | 3 Debian, Fedoraproject, Isync Project | 3 Debian Linux, Fedora, Isync | 2021-12-15 | 7.5 HIGH | 9.8 CRITICAL |
| A flaw was found in mbsync in isync 1.4.0 through 1.4.3. Due to an unchecked condition, a malicious or compromised IMAP server could use a crafted mail message that lacks headers (i.e., one that starts with an empty line) to provoke a heap overflow, which could conceivably be exploited for remote code execution. | |||||
| CVE-2017-14737 | 2 Botan Project, Debian | 2 Botan, Debian Linux | 2021-12-15 | 2.1 LOW | 5.5 MEDIUM |
| A cryptographic cache-based side channel in the RSA implementation in Botan before 1.10.17, and 1.11.x and 2.x before 2.3.0, allows a local attacker to recover information about RSA secret keys, as demonstrated by CacheD. This occurs because an array is indexed with bits derived from a secret key. | |||||
| CVE-2021-3407 | 3 Artifex, Debian, Fedoraproject | 3 Mupdf, Debian Linux, Fedora | 2021-12-15 | 4.3 MEDIUM | 5.5 MEDIUM |
| A flaw was found in mupdf 1.18.0. Double free of object during linearization may lead to memory corruption and other potential consequences. | |||||
| CVE-2020-19609 | 2 Artifex, Debian | 2 Mupdf, Debian Linux | 2021-12-14 | 4.3 MEDIUM | 5.5 MEDIUM |
| Artifex MuPDF before 1.18.0 has a heap based buffer over-write in tiff_expand_colormap() function when parsing TIFF files allowing attackers to cause a denial of service. | |||||
| CVE-2018-10289 | 2 Artifex, Debian | 2 Mupdf, Debian Linux | 2021-12-14 | 4.3 MEDIUM | 5.5 MEDIUM |
| In MuPDF 1.13.0, there is an infinite loop in the fz_skip_space function of the pdf/pdf-xref.c file. A remote adversary could leverage this vulnerability to cause a denial of service via a crafted pdf file. | |||||
| CVE-2018-1000036 | 2 Artifex, Debian | 2 Mupdf, Debian Linux | 2021-12-14 | 4.3 MEDIUM | 5.5 MEDIUM |
| In MuPDF 1.12.0 and earlier, multiple memory leaks in the PDF parser allow an attacker to cause a denial of service (memory leak) via a crafted file. | |||||
| CVE-2016-10246 | 2 Artifex, Debian | 2 Mupdf, Debian Linux | 2021-12-14 | 4.3 MEDIUM | 5.5 MEDIUM |
| Buffer overflow in the main function in jstest_main.c in Mujstest in Artifex Software, Inc. MuPDF before 1.10 allows remote attackers to cause a denial of service (out-of-bounds write) via a crafted file. | |||||
| CVE-2016-10247 | 2 Artifex, Debian | 2 Mupdf, Debian Linux | 2021-12-14 | 4.3 MEDIUM | 5.5 MEDIUM |
| Buffer overflow in the my_getline function in jstest_main.c in Mujstest in Artifex Software, Inc. MuPDF before 1.10 allows remote attackers to cause a denial of service (out-of-bounds write) via a crafted file. | |||||
| CVE-2021-39200 | 2 Debian, Wordpress | 2 Debian Linux, Wordpress | 2021-12-14 | 4.3 MEDIUM | 5.3 MEDIUM |
| WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. In affected versions output data of the function wp_die() can be leaked under certain conditions, which can include data like nonces. It can then be used to perform actions on your behalf. This has been patched in WordPress 5.8.1, along with any older affected versions via minor releases. It's strongly recommended that you keep auto-updates enabled to receive the fix. | |||||
| CVE-2021-28696 | 3 Debian, Fedoraproject, Xen | 3 Debian Linux, Fedora, Xen | 2021-12-14 | 4.6 MEDIUM | 6.8 MEDIUM |
| IOMMU page mapping issues on x86 T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Both AMD and Intel allow ACPI tables to specify regions of memory which should be left untranslated, which typically means these addresses should pass the translation phase unaltered. While these are typically device specific ACPI properties, they can also be specified to apply to a range of devices, or even all devices. On all systems with such regions Xen failed to prevent guests from undoing/replacing such mappings (CVE-2021-28694). On AMD systems, where a discontinuous range is specified by firmware, the supposedly-excluded middle range will also be identity-mapped (CVE-2021-28695). Further, on AMD systems, upon de-assigment of a physical device from a guest, the identity mappings would be left in place, allowing a guest continued access to ranges of memory which it shouldn't have access to anymore (CVE-2021-28696). | |||||
| CVE-2021-28695 | 3 Debian, Fedoraproject, Xen | 3 Debian Linux, Fedora, Xen | 2021-12-14 | 4.6 MEDIUM | 6.8 MEDIUM |
| IOMMU page mapping issues on x86 T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Both AMD and Intel allow ACPI tables to specify regions of memory which should be left untranslated, which typically means these addresses should pass the translation phase unaltered. While these are typically device specific ACPI properties, they can also be specified to apply to a range of devices, or even all devices. On all systems with such regions Xen failed to prevent guests from undoing/replacing such mappings (CVE-2021-28694). On AMD systems, where a discontinuous range is specified by firmware, the supposedly-excluded middle range will also be identity-mapped (CVE-2021-28695). Further, on AMD systems, upon de-assigment of a physical device from a guest, the identity mappings would be left in place, allowing a guest continued access to ranges of memory which it shouldn't have access to anymore (CVE-2021-28696). | |||||
| CVE-2021-42771 | 2 Debian, Pocoo | 2 Debian Linux, Babel | 2021-12-14 | 7.2 HIGH | 7.8 HIGH |
| Babel.Locale in Babel before 2.9.1 allows attackers to load arbitrary locale .dat files (containing serialized Python objects) via directory traversal, leading to code execution. | |||||
| CVE-2021-39201 | 2 Debian, Wordpress | 2 Debian Linux, Wordpress | 2021-12-14 | 3.5 LOW | 5.4 MEDIUM |
| WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. ### Impact The issue allows an authenticated but low-privileged user (like contributor/author) to execute XSS in the editor. This bypasses the restrictions imposed on users who do not have the permission to post `unfiltered_html`. ### Patches This has been patched in WordPress 5.8, and will be pushed to older versions via minor releases (automatic updates). It's strongly recommended that you keep auto-updates enabled to receive the fix. ### References https://wordpress.org/news/category/releases/ https://hackerone.com/reports/1142140 ### For more information If you have any questions or comments about this advisory: * Open an issue in [HackerOne](https://hackerone.com/wordpress) | |||||
| CVE-2021-34556 | 3 Debian, Fedoraproject, Linux | 3 Debian Linux, Fedora, Linux Kernel | 2021-12-14 | 2.1 LOW | 5.5 MEDIUM |
| In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack. | |||||
| CVE-2016-1247 | 4 Canonical, Debian, F5 and 1 more | 4 Ubuntu Linux, Debian Linux, Nginx and 1 more | 2021-12-14 | 7.2 HIGH | 7.8 HIGH |
| The nginx package before 1.6.2-5+deb8u3 on Debian jessie, the nginx packages before 1.4.6-1ubuntu3.6 on Ubuntu 14.04 LTS, before 1.10.0-0ubuntu0.16.04.3 on Ubuntu 16.04 LTS, and before 1.10.1-0ubuntu1.1 on Ubuntu 16.10, and the nginx ebuild before 1.10.2-r3 on Gentoo allow local users with access to the web server user account to gain root privileges via a symlink attack on the error log. | |||||
| CVE-2021-28705 | 3 Debian, Fedoraproject, Xen | 3 Debian Linux, Fedora, Xen | 2021-12-14 | 6.9 MEDIUM | 7.8 HIGH |
| issues with partially successful P2M updates on x86 T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned. Guests are permitted to control certain P2M aspects of individual pages via hypercalls. These hypercalls may act on ranges of pages specified via page orders (resulting in a power-of-2 number of pages). In some cases the hypervisor carries out the requests by splitting them into smaller chunks. Error handling in certain PoD cases has been insufficient in that in particular partial success of some operations was not properly accounted for. There are two code paths affected - page removal (CVE-2021-28705) and insertion of new pages (CVE-2021-28709). (We provide one patch which combines the fix to both issues.) | |||||
| CVE-2021-20275 | 2 Debian, Privoxy | 2 Debian Linux, Privoxy | 2021-12-14 | 5.0 MEDIUM | 7.5 HIGH |
| A flaw was found in privoxy before 3.0.32. A invalid read of size two may occur in chunked_body_is_complete() leading to denial of service. | |||||
| CVE-2020-14404 | 2 Debian, Libvncserver Project | 2 Debian Linux, Libvncserver | 2021-12-14 | 5.5 MEDIUM | 5.4 MEDIUM |
| An issue was discovered in LibVNCServer before 0.9.13. libvncserver/rre.c allows out-of-bounds access via encodings. | |||||
| CVE-2018-20750 | 3 Canonical, Debian, Libvncserver Project | 3 Ubuntu Linux, Debian Linux, Libvncserver | 2021-12-14 | 7.5 HIGH | 9.8 CRITICAL |
| LibVNC through 0.9.12 contains a heap out-of-bounds write vulnerability in libvncserver/rfbserver.c. The fix for CVE-2018-15127 was incomplete. | |||||
| CVE-2019-20839 | 4 Debian, Fedoraproject, Libvncserver Project and 1 more | 4 Debian Linux, Fedora, Libvncserver and 1 more | 2021-12-14 | 5.0 MEDIUM | 7.5 HIGH |
| libvncclient/sockets.c in LibVNCServer before 0.9.13 has a buffer overflow via a long socket filename. | |||||
| CVE-2018-20748 | 3 Canonical, Debian, Libvnc Project | 3 Ubuntu Linux, Debian Linux, Libvncserver | 2021-12-14 | 7.5 HIGH | 9.8 CRITICAL |
| LibVNC before 0.9.12 contains multiple heap out-of-bounds write vulnerabilities in libvncclient/rfbproto.c. The fix for CVE-2018-20019 was incomplete. | |||||