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Ubuntu 16.04 & 14.04: cifs-utils Security Advisory 7688-1

Several security issues were fixed in cifs-utils.. ========================================================================== Ubuntu Security Notice USN-7688-1 August 07, 2025 cifs-utils vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS Summary: Several security issues were fixed in cifs-utils. Software Description: - cifs-utils: Common Internet File System utilities Details: Aurélien Aptel discovered that cifs-utils invoked a shell when requesting a password. In certain environments, a local attacker could possibly use this issue to escalate privileges. (CVE-2020-14342) It was discovered that cifs-utils incorrectly used host credentials when mounting a krb5 CIFS file system from within a container. An attacker inside a container could possibly use this issue to obtain access to sensitive information. (CVE-2021-20208) It was discovered that cifs-utils incorrectly handled certain command-line arguments. A local attacker could possibly use this issue to obtain root privileges. (CVE-2022-27239) It was discovered that cifs-utils incorrectly handled verbose logging. A local attacker could possibly use this issue to obtain sensitive information. (CVE-2022-29869) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS cifs-utils 2:6.4-1ubuntu1.1+esm1 Available with Ubuntu Pro Ubuntu 14.04 LTS cifs-utils 2:6.0-1ubuntu2+esm1 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-7688-1 CVE-2020-14342, CVE-2021-20208, CVE-2022-27239, CVE-2022-29869 . Numerous vulnerabilities addressed in samba packages affect Debian 8 and 9, necessitating urgent patches to ensure systemsafety.. CIFS Utilities, Ubuntu Security, Privilege Escalation, Local Attacks. . Severity: Critical. LinuxSecurity.com Team

Aug 07, 2025 •Critical Ubuntu