========================================================================== Ubuntu Security Notice USN-6425-3 October 17, 2023
samba vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: Summary: Several security issues were fixed in Samba. Software Description: Details: USN-6425-1 fixed vulnerabilities in Samba. This update provides the corresponding updates for Ubuntu 23.10. Original advisory details: Sri Nagasubramanian discovered that the Samba acl_xattr VFS module incorrectly handled read-only files. When Samba is configured to ignore system ACLs, a remote attacker could possibly use this issue to truncate read-only files. (CVE-2023-4091) Andrew Bartlett discovered that Samba incorrectly handled the DirSync control. A remote attacker with an RODC DC account could possibly use this issue to obtain all domain secrets. (CVE-2023-4154) Andrew Bartlett discovered that Samba incorrectly handled the rpcecho development server. A remote attacker could possibly use this issue to cause Samba to stop responding, resulting in a denial of service. (CVE-2023-42669) Kirin van der Veer discovered that Samba incorrectly handled certain RPC service listeners. A remote attacker could possibly use this issue to cause Samba to start multiple incompatible RPC listeners, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS, and Ubuntu 23.04. (CVE-2023-42670) Update instructions: The problem can be corrected by updating your system to the following package versions: In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-6425-3 https://ubuntu.com/security/notices/USN-6425-1 CVE-2023-4091, CVE-2023-4154, CVE-2023-42669, CVE-2023-42670
OpenPGP_signature.asc
Description: OpenPGP digital signature
