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207 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
|---|---|---|---|---|---|
| CVE-2020-1472 | 8 Canonical, Debian, Fedoraproject and 5 more | 11 Ubuntu Linux, Debian Linux, Fedora and 8 more | 2024-01-04 | 9.3 HIGH | 5.5 MEDIUM |
| <p>An elevation of privilege vulnerability exists when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller, using the Netlogon Remote Protocol (<a href="https://docs.microsoft.com/openspecs/windows_protocols/ms-nrpc/ff8f970f-3e37-40f7-bd4b-af7336e4792f">MS-NRPC</a>). An attacker who successfully exploited the vulnerability could run a specially crafted application on a device on the network.</p> <p>To exploit the vulnerability, an unauthenticated attacker would be required to use MS-NRPC to connect to a domain controller to obtain domain administrator access.</p> <p>Microsoft is addressing the vulnerability in a phased two-part rollout. These updates address the vulnerability by modifying how Netlogon handles the usage of Netlogon secure channels.</p> <p>For guidelines on how to manage the changes required for this vulnerability and more information on the phased rollout, see <a href="https://support.microsoft.com/kb/4557222">How to manage the changes in Netlogon secure channel connections associated with CVE-2020-1472</a> (updated September 28, 2020).</p> <p>When the second phase of Windows updates become available in Q1 2021, customers will be notified via a revision to this security vulnerability. If you wish to be notified when these updates are released, we recommend that you register for the security notifications mailer to be alerted of content changes to this advisory. See <a href="https://technet.microsoft.com/en-us/security/dd252948">Microsoft Technical Security Notifications</a>.</p> | |||||
| CVE-2023-3961 | 3 Fedoraproject, Redhat, Samba | 5 Fedora, Enterprise Linux, Enterprise Linux Eus and 2 more | 2024-01-02 | N/A | 9.8 CRITICAL |
| A path traversal vulnerability was identified in Samba when processing client pipe names connecting to Unix domain sockets within a private directory. Samba typically uses this mechanism to connect SMB clients to remote procedure call (RPC) services like SAMR LSA or SPOOLSS, which Samba initiates on demand. However, due to inadequate sanitization of incoming client pipe names, allowing a client to send a pipe name containing Unix directory traversal characters (../). This could result in SMB clients connecting as root to Unix domain sockets outside the private directory. If an attacker or client managed to send a pipe name resolving to an external service using an existing Unix domain socket, it could potentially lead to unauthorized access to the service and consequential adverse events, including compromise or service crashes. | |||||
| CVE-2020-17049 | 2 Microsoft, Samba | 4 Windows Server 2012, Windows Server 2016, Windows Server 2019 and 1 more | 2023-12-31 | 9.0 HIGH | 6.6 MEDIUM |
| <p>A security feature bypass vulnerability exists in the way Key Distribution Center (KDC) determines if a service ticket can be used for delegation via Kerberos Constrained Delegation (KCD).</p> <p>To exploit the vulnerability, a compromised service that is configured to use KCD could tamper with a service ticket that is not valid for delegation to force the KDC to accept it.</p> <p>The update addresses this vulnerability by changing how the KDC validates service tickets used with KCD.</p> | |||||
| CVE-2023-4154 | 1 Samba | 1 Samba | 2023-12-29 | N/A | 6.5 MEDIUM |
| A design flaw was found in Samba's DirSync control implementation, which exposes passwords and secrets in Active Directory to privileged users and Read-Only Domain Controllers (RODCs). This flaw allows RODCs and users possessing the GET_CHANGES right to access all attributes, including sensitive secrets and passwords. Even in a default setup, RODC DC accounts, which should only replicate some passwords, can gain access to all domain secrets, including the vital krbtgt, effectively eliminating the RODC / DC distinction. Furthermore, the vulnerability fails to account for error conditions (fail open), like out-of-memory situations, potentially granting access to secret attributes, even under low-privileged attacker influence. | |||||
| CVE-2023-34968 | 4 Debian, Fedoraproject, Redhat and 1 more | 5 Debian Linux, Fedora, Enterprise Linux and 2 more | 2023-12-28 | N/A | 5.3 MEDIUM |
| A path disclosure vulnerability was found in Samba. As part of the Spotlight protocol, Samba discloses the server-side absolute path of shares, files, and directories in the results for search queries. This flaw allows a malicious client or an attacker with a targeted RPC request to view the information that is part of the disclosed path. | |||||
| CVE-2023-34966 | 4 Debian, Fedoraproject, Redhat and 1 more | 4 Debian Linux, Fedora, Enterprise Linux and 1 more | 2023-12-27 | N/A | 7.5 HIGH |
| An infinite loop vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets sent by the client, the core unmarshalling function sl_unpack_loop() did not validate a field in the network packet that contains the count of elements in an array-like structure. By passing 0 as the count value, the attacked function will run in an endless loop consuming 100% CPU. This flaw allows an attacker to issue a malformed RPC request, triggering an infinite loop, resulting in a denial of service condition. | |||||
| CVE-2023-34967 | 4 Debian, Fedoraproject, Redhat and 1 more | 4 Debian Linux, Fedora, Enterprise Linux and 1 more | 2023-12-27 | N/A | 5.3 MEDIUM |
| A Type Confusion vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets, one encoded data structure is a key-value style dictionary where the keys are character strings, and the values can be any of the supported types in the mdssvc protocol. Due to a lack of type checking in callers of the dalloc_value_for_key() function, which returns the object associated with a key, a caller may trigger a crash in talloc_get_size() when talloc detects that the passed-in pointer is not a valid talloc pointer. With an RPC worker process shared among multiple client connections, a malicious client or attacker can trigger a process crash in a shared RPC mdssvc worker process, affecting all other clients this worker serves. | |||||
| CVE-2022-2127 | 4 Debian, Fedoraproject, Redhat and 1 more | 4 Debian Linux, Fedora, Enterprise Linux and 1 more | 2023-12-27 | N/A | 5.9 MEDIUM |
| An out-of-bounds read vulnerability was found in Samba due to insufficient length checks in winbindd_pam_auth_crap.c. When performing NTLM authentication, the client replies to cryptographic challenges back to the server. These replies have variable lengths, and Winbind fails to check the lan manager response length. When Winbind is used for NTLM authentication, a maliciously crafted request can trigger an out-of-bounds read in Winbind, possibly resulting in a crash. | |||||
| CVE-2022-4603 | 1 Samba | 1 Ppp | 2023-12-20 | N/A | 6.5 MEDIUM |
| A vulnerability classified as problematic has been found in ppp. Affected is the function dumpppp of the file pppdump/pppdump.c of the component pppdump. The manipulation of the argument spkt.buf/rpkt.buf leads to improper validation of array index. The real existence of this vulnerability is still doubted at the moment. The name of the patch is a75fb7b198eed50d769c80c36629f38346882cbf. It is recommended to apply a patch to fix this issue. VDB-216198 is the identifier assigned to this vulnerability. NOTE: pppdump is not used in normal process of setting up a PPP connection, is not installed setuid-root, and is not invoked automatically in any scenario. | |||||
| CVE-2018-14628 | 2 Fedoraproject, Samba | 2 Fedora, Samba | 2023-12-04 | N/A | 4.3 MEDIUM |
| An information leak vulnerability was discovered in Samba's LDAP server. Due to missing access control checks, an authenticated but unprivileged attacker could discover the names and preserved attributes of deleted objects in the LDAP store. | |||||
| CVE-2022-29869 | 3 Debian, Fedoraproject, Samba | 3 Debian Linux, Fedora, Cifs-utils | 2023-11-24 | 4.3 MEDIUM | 5.3 MEDIUM |
| cifs-utils through 6.14, with verbose logging, can cause an information leak when a file contains = (equal sign) characters but is not a valid credentials file. | |||||
| CVE-2022-27239 | 5 Debian, Fedoraproject, Hp and 2 more | 19 Debian Linux, Fedora, Helion Openstack and 16 more | 2023-11-24 | 7.2 HIGH | 7.8 HIGH |
| In cifs-utils through 6.14, a stack-based buffer overflow when parsing the mount.cifs ip= command-line argument could lead to local attackers gaining root privileges. | |||||
| CVE-2023-5568 | 1 Samba | 1 Samba | 2023-11-24 | N/A | 6.5 MEDIUM |
| A heap-based Buffer Overflow flaw was discovered in Samba. It could allow a remote, authenticated attacker to exploit this vulnerability to cause a denial of service. | |||||
| CVE-2023-42670 | 2 Fedoraproject, Samba | 2 Fedora, Samba | 2023-11-24 | N/A | 6.5 MEDIUM |
| A flaw was found in Samba. It is susceptible to a vulnerability where multiple incompatible RPC listeners can be initiated, causing disruptions in the AD DC service. When Samba's RPC server experiences a high load or unresponsiveness, servers intended for non-AD DC purposes (for example, NT4-emulation "classic DCs") can erroneously start and compete for the same unix domain sockets. This issue leads to partial query responses from the AD DC, causing issues such as "The procedure number is out of range" when using tools like Active Directory Users. This flaw allows an attacker to disrupt AD DC services. | |||||
| CVE-2023-4091 | 3 Fedoraproject, Redhat, Samba | 5 Fedora, Enterprise Linux, Enterprise Linux Eus and 2 more | 2023-11-24 | N/A | 6.5 MEDIUM |
| A vulnerability was discovered in Samba, where the flaw allows SMB clients to truncate files, even with read-only permissions when the Samba VFS module "acl_xattr" is configured with "acl_xattr:ignore system acls = yes". The SMB protocol allows opening files when the client requests read-only access but then implicitly truncates the opened file to 0 bytes if the client specifies a separate OVERWRITE create disposition request. The issue arises in configurations that bypass kernel file system permissions checks, relying solely on Samba's permissions. | |||||
| CVE-2023-42669 | 2 Redhat, Samba | 8 Enterprise Linux, Enterprise Linux Eus, Enterprise Linux For Ibm Z Systems and 5 more | 2023-11-24 | N/A | 6.5 MEDIUM |
| A vulnerability was found in Samba's "rpcecho" development server, a non-Windows RPC server used to test Samba's DCE/RPC stack elements. This vulnerability stems from an RPC function that can be blocked indefinitely. The issue arises because the "rpcecho" service operates with only one worker in the main RPC task, allowing calls to the "rpcecho" server to be blocked for a specified time, causing service disruptions. This disruption is triggered by a "sleep()" call in the "dcesrv_echo_TestSleep()" function under specific conditions. Authenticated users or attackers can exploit this vulnerability to make calls to the "rpcecho" server, requesting it to block for a specified duration, effectively disrupting most services and leading to a complete denial of service on the AD DC. The DoS affects all other services as "rpcecho" runs in the main RPC task. | |||||
| CVE-2021-20251 | 2 Fedoraproject, Samba | 2 Fedora, Samba | 2023-08-18 | N/A | 5.9 MEDIUM |
| A flaw was found in samba. A race condition in the password lockout code may lead to the risk of brute force attacks being successful if special conditions are met. | |||||
| CVE-2022-38023 | 4 Fedoraproject, Microsoft, Netapp and 1 more | 9 Fedora, Windows Server 2008, Windows Server 2012 and 6 more | 2023-08-18 | N/A | 8.1 HIGH |
| Netlogon RPC Elevation of Privilege Vulnerability | |||||
| CVE-2022-37966 | 4 Fedoraproject, Microsoft, Netapp and 1 more | 9 Fedora, Windows Server 2008, Windows Server 2012 and 6 more | 2023-08-18 | N/A | 8.1 HIGH |
| Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability | |||||
| CVE-2022-37967 | 4 Fedoraproject, Microsoft, Netapp and 1 more | 9 Fedora, Windows Server 2008, Windows Server 2012 and 6 more | 2023-08-18 | N/A | 7.2 HIGH |
| Windows Kerberos Elevation of Privilege Vulnerability | |||||
| CVE-2023-3347 | 3 Fedoraproject, Redhat, Samba | 4 Fedora, Enterprise Linux, Storage and 1 more | 2023-08-15 | N/A | 5.9 MEDIUM |
| A vulnerability was found in Samba's SMB2 packet signing mechanism. The SMB2 packet signing is not enforced if an admin configured "server signing = required" or for SMB2 connections to Domain Controllers where SMB2 packet signing is mandatory. This flaw allows an attacker to perform attacks, such as a man-in-the-middle attack, by intercepting the network traffic and modifying the SMB2 messages between client and server, affecting the integrity of the data. | |||||
| CVE-2022-29154 | 2 Fedoraproject, Samba | 2 Fedora, Rsync | 2023-08-08 | N/A | 7.4 HIGH |
| An issue was discovered in rsync before 3.2.5 that allows malicious remote servers to write arbitrary files inside the directories of connecting peers. The server chooses which files/directories are sent to the client. However, the rsync client performs insufficient validation of file names. A malicious rsync server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the rsync client target directory and subdirectories (for example, overwrite the .ssh/authorized_keys file). | |||||
| CVE-2021-43566 | 1 Samba | 1 Samba | 2022-06-02 | 1.2 LOW | 2.5 LOW |
| All versions of Samba prior to 4.13.16 are vulnerable to a malicious client using an SMB1 or NFS race to allow a directory to be created in an area of the server file system not exported under the share definition. Note that SMB1 has to be enabled, or the share also available via NFS in order for this attack to succeed. | |||||
| CVE-2020-14303 | 5 Canonical, Debian, Fedoraproject and 2 more | 5 Ubuntu Linux, Debian Linux, Fedora and 2 more | 2022-04-28 | 5.0 MEDIUM | 7.5 HIGH |
| A flaw was found in the AD DC NBT server in all Samba versions before 4.10.17, before 4.11.11 and before 4.12.4. A samba user could send an empty UDP packet to cause the samba server to crash. | |||||
| CVE-2020-25719 | 5 Canonical, Debian, Fedoraproject and 2 more | 17 Ubuntu Linux, Debian Linux, Fedora and 14 more | 2022-02-28 | 9.0 HIGH | 7.2 HIGH |
| A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total domain compromise. | |||||
| CVE-2020-25722 | 4 Canonical, Debian, Fedoraproject and 1 more | 4 Ubuntu Linux, Debian Linux, Fedora and 1 more | 2022-02-25 | 6.5 MEDIUM | 8.8 HIGH |
| Multiple flaws were found in the way samba AD DC implemented access and conformance checking of stored data. An attacker could use this flaw to cause total domain compromise. | |||||
| CVE-2020-25717 | 5 Canonical, Debian, Fedoraproject and 2 more | 25 Ubuntu Linux, Debian Linux, Fedora and 22 more | 2022-02-25 | 8.5 HIGH | 8.1 HIGH |
| A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use this flaw to cause possible privilege escalation. | |||||
| CVE-2016-2124 | 5 Canonical, Debian, Fedoraproject and 2 more | 24 Ubuntu Linux, Debian Linux, Fedora and 21 more | 2022-02-25 | 4.3 MEDIUM | 5.9 MEDIUM |
| A flaw was found in the way samba implemented SMB1 authentication. An attacker could use this flaw to retrieve the plaintext password sent over the wire even if Kerberos authentication was required. | |||||
| CVE-2021-44142 | 6 Canonical, Debian, Fedoraproject and 3 more | 23 Ubuntu Linux, Debian Linux, Fedora and 20 more | 2022-02-23 | 9.0 HIGH | 8.8 HIGH |
| The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide "...enhanced compatibility with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver." Samba versions prior to 4.13.17, 4.14.12 and 4.15.5 with vfs_fruit configured allow out-of-bounds heap read and write via specially crafted extended file attributes. A remote attacker with write access to extended file attributes can execute arbitrary code with the privileges of smbd, typically root. | |||||
| CVE-2021-44141 | 3 Fedoraproject, Redhat, Samba | 3 Fedora, Storage, Samba | 2022-02-23 | 3.5 LOW | 4.3 MEDIUM |
| All versions of Samba prior to 4.15.5 are vulnerable to a malicious client using a server symlink to determine if a file or directory exists in an area of the server file system not exported under the share definition. SMB1 with unix extensions has to be enabled in order for this attack to succeed. | |||||
| CVE-2020-14318 | 2 Redhat, Samba | 3 Enterprise Linux, Storage, Samba | 2022-01-01 | 4.0 MEDIUM | 4.3 MEDIUM |
| A flaw was found in the way samba handled file and directory permissions. An authenticated user could use this flaw to gain access to certain file and directory information which otherwise would be unavailable to the attacker. | |||||
| CVE-2020-10704 | 4 Debian, Fedoraproject, Opensuse and 1 more | 4 Debian Linux, Fedora, Leap and 1 more | 2021-12-20 | 5.0 MEDIUM | 7.5 HIGH |
| A flaw was found when using samba as an Active Directory Domain Controller. Due to the way samba handles certain requests as an Active Directory Domain Controller LDAP server, an unauthorized user can cause a stack overflow leading to a denial of service. The highest threat from this vulnerability is to system availability. This issue affects all samba versions before 4.10.15, before 4.11.8 and before 4.12.2. | |||||
| 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-2021-20208 | 3 Fedoraproject, Redhat, Samba | 3 Fedora, Enterprise Linux, Cifs-utils | 2021-12-10 | 4.9 MEDIUM | 6.1 MEDIUM |
| A flaw was found in cifs-utils in versions before 6.13. A user when mounting a krb5 CIFS file system from within a container can use Kerberos credentials of the host. The highest threat from this vulnerability is to data confidentiality and integrity. | |||||
| CVE-2021-3671 | 1 Samba | 1 Samba | 2021-10-19 | 4.0 MEDIUM | 6.5 MEDIUM |
| A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server. | |||||
| CVE-2020-14323 | 4 Debian, Fedoraproject, Opensuse and 1 more | 4 Debian Linux, Fedora, Leap and 1 more | 2021-10-19 | 2.1 LOW | 5.5 MEDIUM |
| A null pointer dereference flaw was found in samba's Winbind service in versions before 4.11.15, before 4.12.9 and before 4.13.1. A local user could use this flaw to crash the winbind service causing denial of service. | |||||
| CVE-2019-3870 | 3 Fedoraproject, Samba, Synology | 9 Fedora, Samba, Directory Server and 6 more | 2021-08-17 | 3.6 LOW | 6.1 MEDIUM |
| A vulnerability was found in Samba from version (including) 4.9 to versions before 4.9.6 and 4.10.2. During the creation of a new Samba AD DC, files are created in a private subdirectory of the install location. This directory is typically mode 0700, that is owner (root) only access. However in some upgraded installations it will have other permissions, such as 0755, because this was the default before Samba 4.8. Within this directory, files are created with mode 0666, which is world-writable, including a sample krb5.conf, and the list of DNS names and servicePrincipalName values to update. | |||||
| CVE-2021-20254 | 4 Debian, Fedoraproject, Redhat and 1 more | 4 Debian Linux, Fedora, Enterprise Linux and 1 more | 2021-06-24 | 4.9 MEDIUM | 6.8 MEDIUM |
| A flaw was found in samba. The Samba smbd file server must map Windows group identities (SIDs) into unix group ids (gids). The code that performs this had a flaw that could allow it to read data beyond the end of the array in the case where a negative cache entry had been added to the mapping cache. This could cause the calling code to return those values into the process token that stores the group membership for a user. The highest threat from this vulnerability is to data confidentiality and integrity. | |||||
| CVE-2020-14387 | 1 Samba | 1 Rsync | 2021-06-09 | 5.8 MEDIUM | 7.4 HIGH |
| A flaw was found in rsync in versions since 3.2.0pre1. Rsync improperly validates certificate with host mismatch vulnerability. A remote, unauthenticated attacker could exploit the flaw by performing a man-in-the-middle attack using a valid certificate for another hostname which could compromise confidentiality and integrity of data transmitted using rsync-ssl. The highest threat from this vulnerability is to data confidentiality and integrity. This flaw affects rsync versions before 3.2.4. | |||||
| CVE-2019-14902 | 3 Canonical, Opensuse, Samba | 3 Ubuntu Linux, Leap, Samba | 2021-05-29 | 5.5 MEDIUM | 5.4 MEDIUM |
| There is an issue in all samba 4.11.x versions before 4.11.5, all samba 4.10.x versions before 4.10.12 and all samba 4.9.x versions before 4.9.18, where the removal of the right to create or modify a subtree would not automatically be taken away on all domain controllers. | |||||
| CVE-2019-14847 | 3 Fedoraproject, Opensuse, Samba | 3 Fedora, Leap, Samba | 2021-05-29 | 4.0 MEDIUM | 4.9 MEDIUM |
| A flaw was found in samba 4.0.0 before samba 4.9.15 and samba 4.10.x before 4.10.10. An attacker can crash AD DC LDAP server via dirsync resulting in denial of service. Privilege escalation is not possible with this issue. | |||||
| CVE-2019-14861 | 4 Canonical, Fedoraproject, Opensuse and 1 more | 4 Ubuntu Linux, Fedora, Leap and 1 more | 2021-05-29 | 3.5 LOW | 5.3 MEDIUM |
| All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the (poorly named) dnsserver RPC pipe provides administrative facilities to modify DNS records and zones. Samba, when acting as an AD DC, stores DNS records in LDAP. In AD, the default permissions on the DNS partition allow creation of new records by authenticated users. This is used for example to allow machines to self-register in DNS. If a DNS record was created that case-insensitively matched the name of the zone, the ldb_qsort() and dns_name_compare() routines could be confused into reading memory prior to the list of DNS entries when responding to DnssrvEnumRecords() or DnssrvEnumRecords2() and so following invalid memory as a pointer. | |||||
| CVE-2019-14870 | 3 Canonical, Fedoraproject, Samba | 3 Ubuntu Linux, Fedora, Samba | 2021-05-29 | 6.4 MEDIUM | 5.4 MEDIUM |
| All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the S4U (MS-SFU) Kerberos delegation model includes a feature allowing for a subset of clients to be opted out of constrained delegation in any way, either S4U2Self or regular Kerberos authentication, by forcing all tickets for these clients to be non-forwardable. In AD this is implemented by a user attribute delegation_not_allowed (aka not-delegated), which translates to disallow-forwardable. However the Samba AD DC does not do that for S4U2Self and does set the forwardable flag even if the impersonated client has the not-delegated flag set. | |||||
| CVE-2019-10218 | 2 Fedoraproject, Samba | 2 Fedora, Samba | 2021-05-29 | 4.3 MEDIUM | 6.5 MEDIUM |
| A flaw was found in the samba client, all samba versions before samba 4.11.2, 4.10.10 and 4.9.15, where a malicious server can supply a pathname to the client with separators. This could allow the client to access files and folders outside of the SMB network pathnames. An attacker could use this vulnerability to create files outside of the current working directory using the privileges of the client user. | |||||
| CVE-2019-14907 | 5 Canonical, Fedoraproject, Redhat and 2 more | 9 Ubuntu Linux, Fedora, Enterprise Linux and 6 more | 2021-05-29 | 2.6 LOW | 6.5 MEDIUM |
| All samba versions 4.9.x before 4.9.18, 4.10.x before 4.10.12 and 4.11.x before 4.11.5 have an issue where if it is set with "log level = 3" (or above) then the string obtained from the client, after a failed character conversion, is printed. Such strings can be provided during the NTLMSSP authentication exchange. In the Samba AD DC in particular, this may cause a long-lived process(such as the RPC server) to terminate. (In the file server case, the most likely target, smbd, operates as process-per-client and so a crash there is harmless). | |||||
| CVE-2019-14833 | 3 Fedoraproject, Opensuse, Samba | 3 Fedora, Leap, Samba | 2021-05-29 | 4.9 MEDIUM | 5.4 MEDIUM |
| A flaw was found in Samba, all versions starting samba 4.5.0 before samba 4.9.15, samba 4.10.10, samba 4.11.2, in the way it handles a user password change or a new password for a samba user. The Samba Active Directory Domain Controller can be configured to use a custom script to check for password complexity. This configuration can fail to verify password complexity when non-ASCII characters are used in the password, which could lead to weak passwords being set for samba users, making it vulnerable to dictionary attacks. | |||||
| CVE-2020-27840 | 3 Debian, Fedoraproject, Samba | 3 Debian Linux, Fedora, Samba | 2021-05-26 | 5.0 MEDIUM | 7.5 HIGH |
| A flaw was found in samba. Spaces used in a string around a domain name (DN), while supposed to be ignored, can cause invalid DN strings with spaces to instead write a zero-byte into out-of-bounds memory, resulting in a crash. The highest threat from this vulnerability is to system availability. | |||||
| CVE-2021-20277 | 3 Debian, Fedoraproject, Samba | 3 Debian Linux, Fedora, Samba | 2021-05-26 | 5.0 MEDIUM | 7.5 HIGH |
| A flaw was found in Samba's libldb. Multiple, consecutive leading spaces in an LDAP attribute can lead to an out-of-bounds memory write, leading to a crash of the LDAP server process handling the request. The highest threat from this vulnerability is to system availability. | |||||
| CVE-2020-14383 | 2 Redhat, Samba | 2 Enterprise Linux, Samba | 2021-05-05 | 4.0 MEDIUM | 6.5 MEDIUM |
| A flaw was found in samba's DNS server. An authenticated user could use this flaw to the RPC server to crash. This RPC server, which also serves protocols other than dnsserver, will be restarted after a short delay, but it is easy for an authenticated non administrative attacker to crash it again as soon as it returns. The Samba DNS server itself will continue to operate, but many RPC services will not. | |||||
| CVE-2020-10730 | 4 Fedoraproject, Opensuse, Redhat and 1 more | 4 Fedora, Leap, Storage and 1 more | 2021-04-02 | 4.0 MEDIUM | 6.5 MEDIUM |
| A NULL pointer dereference, or possible use-after-free flaw was found in Samba AD LDAP server in versions before 4.10.17, before 4.11.11 and before 4.12.4. Although some versions of Samba shipped with Red Hat Enterprise Linux do not support Samba in AD mode, the affected code is shipped with the libldb package. This flaw allows an authenticated user to possibly trigger a use-after-free or NULL pointer dereference. The highest threat from this vulnerability is to system availability. | |||||