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Ubuntu 22.04 LTS USN-6239-1 Moderate: ECDSA Signature Bypass

ECDSA Util could be made to accept forged signatures.. =========================================================================Ubuntu Security Notice USN-6239-1 July 20, 2023 ecdsautils vulnerability ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS (Available with Ubuntu Pro) - Ubuntu 16.04 LTS (Available with Ubuntu Pro) Summary: ECDSA Util could be made to accept forged signatures. Software Description: - ecdsautils: ECDSA elliptic curve cryptography command line tools Details: It was discovered that ECDSA Util did not properly verify certain signature values. An attacker could possibly use this issue to bypass signature verification. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: ecdsautils 0.3.2+git20151018-2+deb10u1build0.22.04.1 Ubuntu 20.04 LTS: ecdsautils 0.3.2+git20151018-2+deb10u1build0.20.04.1 Ubuntu 18.04 LTS (Available with Ubuntu Pro): ecdsautils 0.3.2+git20151018-2ubuntu0.18.04.1~esm1 Ubuntu 16.04 LTS (Available with Ubuntu Pro): ecdsautils 0.3.2+git20151018-2ubuntu0.16.04.1~esm1 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-6239-1 CVE-2022-24884 Package Information: https://launchpad.net/ubuntu/+source/ecdsautils/0.3.2+git20151018-2+deb10u1build0.22.04.1 https://launchpad.net/ubuntu/+source/ecdsautils/0.3.2+git20151018-2+deb10u1build0.20.04.1 . Signature problems in ECDSA on several Ubuntu LTS editions could let attackers create fake signatures. Immediate system updates are recommended to ensure safety.. ECDSA Security, Signature Bypass, Ubuntu Updates. . Severity: Important. LinuxSecurity.com Team

Jul 20, 2023 •Important Ubuntu