========================================================================== Ubuntu Security Notice USN-5366-1 April 07, 2022 fribidi vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.10 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: Several security issues were fixed in fribidi. Software Description: - fribidi: Free Implementation of the Unicode BiDi algorithm (utility) Details: It was discovered that FriBidi incorrectly handled processing of input strings resulting in memory corruption. An attacker could use this issue to cause FriBidi to crash, resulting in a denial of service, or potentially execute arbitrary code. (CVE-2022-25308) It was discovered that FriBidi incorrectly validated input data to its CapRTL unicode encoder, resulting in memory corruption. An attacker could use this issue to cause FriBidi to crash, resulting in a denial of service, or potentially execute arbitrary code. (CVE-2022-25309) It was discovered that FriBidi incorrectly handled empty input when removing marks from unicode strings, resulting in a crash. An attacker could use this to cause FriBidi to crash, resulting in a denial of service, or potentially execute arbitrary code. (CVE-2022-25310) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 21.10: libfribidi-bin 1.0.8-2ubuntu2.1 libfribidi0 1.0.8-2ubuntu2.1 Ubuntu 20.04 LTS: libfribidi-bin 1.0.8-2ubuntu0.1 libfribidi0 1.0.8-2ubuntu0.1 Ubuntu 18.04 LTS: libfribidi-bin 0.19.7-2ubuntu0.1 libfribidi0 0.19.7-2ubuntu0.1 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5366-1 CVE-2022-25308, CVE-2022-25309, CVE-2022-25310 Package Information: https://launchpad.net/ubuntu/+source/fribidi/1.0.8-2ubuntu2.1 https://launchpad.net/ubuntu/+source/fribidi/1.0.8-2ubuntu0.1 https://launchpad.net/ubuntu/+source/fribidi/0.19.7-2ubuntu0.1