ubuntu-usn

USN-5066-2: PySAML2 vulnerability USN-5066-1 fixed a vulnerability in PySAML2. This update provides the corresponding update for Ubuntu 16.04 ESM. Original advisory details: Brian Wolff discovered that PySAML2 incorrectly validated cryptographic signatures. A remote attacker could possibly use this issue to alter SAML documents. Source: USN-5066-2: PySAML2 vulnerability

USN-5068-1: GD library vulnerabilities It was discovered that GD Graphics Library incorrectly handled certain GD and GD2 files. An attacker could possibly use this issue to cause a crash or expose sensitive information. This issue only affected Ubuntu 20.04 LTS, Ubuntu 18.04 LTS, Ubuntu 16.04 ESM, and Ubuntu 14.04 ESM. (CVE-2017-6363) It was discovered that GD Graphics Library incorrectly handled certain TGA files. An attacker could possibly use this issue to cause a denial of service or expose sensitive information. (CVE-2021-381) It was discovered that GD Graphics Library incorrectly handled certain files. An attacker could possibly use this issue to cause a crash. (CVE-2021-40145) Source: USN-5068-1: GD library vulnerabilities

USN-5069-1: mod-auth-mellon vulnerability It was discovered that mod-auth-mellon incorrectly filtered certain URLs. A remote attacker could possibly use this issue to perform an open redirect attack. Source: USN-5069-1: mod-auth-mellon vulnerability

USN-5067-1: SSSD vulnerabilities Jakub Hrozek discovered that SSSD incorrectly handled file permissions. A local attacker could possibly use this issue to read the sudo rules available for any user. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-10852) It was discovered that SSSD incorrectly handled Group Policy Objects. When SSSD is configured with too strict permissions causing the GPO to not be readable, SSSD will allow all authenticated users to login instead of being denied, contrary to expectations. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-16838) It was discovered that SSSD incorrectly handled users with no home directory set. When no home directory was set, SSSD would return the root directory instead of an empty string, possibly bypassing security measures. This issue only affected Ubuntu 18.04 LTS. (CVE-2019-3811) Cedric Buissart discovered that SSSD incorrectly handled the sssctl command. In certain environments, [ more… ]

USN-5066-1: PySAML2 vulnerability Brian Wolff discovered that PySAML2 incorrectly validated cryptographic signatures. A remote attacker could possibly use this issue to alter SAML documents. Source: USN-5066-1: PySAML2 vulnerability