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Ls Advisories Ubuntu Esm H240
Price Tag 1security advisorysecurity issueauthentication fix

Ubuntu 22.10 USN-5825-2: Critical PAM Authentication Fix

USN-5825-1 caused some minor regressions in PAM.. =========================================================================Ubuntu Security Notice USN-5825-2 February 06, 2023 pam regressions ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.10 - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 ESM - Ubuntu 14.04 ESM Summary: USN-5825-1 caused some minor regressions in PAM. Software Description: - pam: Pluggable Authentication Modules Details: USN-5825-1 fixed vulnerabilities in PAM. Unfortunately that update was incomplete and could introduce a regression. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that PAM did not correctly restrict login from an IP address that is not resolvable via DNS. An attacker could possibly use this issue to bypass authentication. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.10: libpam-modules 1.5.2-2ubuntu1.3 Ubuntu 22.04 LTS: libpam-modules 1.4.0-11ubuntu2.3 Ubuntu 20.04 LTS: libpam-modules 1.3.1-5ubuntu4.6 Ubuntu 18.04 LTS: libpam-modules 1.1.8-3.6ubuntu2.18.04.6 Ubuntu 16.04 ESM: libpam-modules 1.1.8-3.2ubuntu2.3+esm4 Ubuntu 14.04 ESM: libpam-modules 1.1.8-1ubuntu2.2+esm3 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5825-2 https://ubuntu.com/security/notices/USN-5825-1 CVE-2022-28321, https://bugs.launchpad.net/ubuntu/+source/pam/+bug/2006073 Package Information: https://launchpad.net/ubuntu/+source/pam/1.5.2-2ubuntu1.3 https://launchpad.net/ubuntu/+source/pam/1.4.0-11ubuntu2.3 https://launchpad.net/ubuntu/+source/pam/1.3.1-5ubuntu4.6 https://launchpad.net/ubuntu/+source/pam/1.1.8-3.6ubuntu2.18.04.6 . Some setbacks were introduced by USN-5825-2 within PAM. Detailed upgrade instructions available for various Ubuntu versions.. Ubuntu PAM Security Update, Authentication Module Fix, USN-5825-2 Details. . Severity: Critical. LinuxSecurity.com Team

Calendar 2 Feb 06, 2023 •Critical Ubuntu
172
Ls Advisories Ubuntu Esm H240
Price Tag 1security advisorymoderateubuntu

Ubuntu: 1140-2 Moderate: PAM Misconfigurations Disrupt Scheduled Tasks

The USN-1140-1 PAM update caused cron to stop working.. =========================================================================Ubuntu Security Notice USN-1140-2 May 31, 2011 pam regression ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 11.04 - Ubuntu 10.10 - Ubuntu 10.04 LTS - Ubuntu 8.04 LTS Summary: The USN-1140-1 PAM update caused cron to stop working. Software Description: - pam: Pluggable Authentication Modules Details: USN-1140-1 fixed vulnerabilities in PAM. A regression was found that caused cron to stop working with a "Module is unknown" error. As a result, systems configured with automatic updates will not receive updates until cron is restarted, these updates are installed or the system is rebooted. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Marcus Granado discovered that PAM incorrectly handled configuration files with non-ASCII usernames. A remote attacker could use this flaw to cause a denial of service, or possibly obtain login access with a different users username. This issue only affected Ubuntu 8.04 LTS. (CVE-2009-0887) It was discovered that the PAM pam_xauth, pam_env and pam_mail modules incorrectly handled dropping privileges when performing operations. A local attacker could use this flaw to read certain arbitrary files, and access other sensitive information. (CVE-2010-3316, CVE-2010-3430, CVE-2010-3431, CVE-2010-3435) It was discovered that the PAM pam_namespace module incorrectly cleaned the environment during execution of the namespace.init script. A local attacker could use this flaw to possibly gain privileges. (CVE-2010-3853) It was discovered that the PAM pam_xauth module incorrectly handled certain failures. A local attacker could use this flaw to delete certain unintended files. (CVE-2010-4706) It was discovered that the PAM pam_xauthmodule incorrectly verified certain file properties. A local attacker could use this flaw to cause a denial of service. (CVE-2010-4707) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 11.04: libpam-modules 1.1.2-2ubuntu8.3 libpam0g 1.1.2-2ubuntu8.3 Ubuntu 10.10: libpam-modules 1.1.1-4ubuntu2.3 libpam0g 1.1.1-4ubuntu2.3 Ubuntu 10.04 LTS: libpam-modules 1.1.1-2ubuntu5.3 libpam0g 1.1.1-2ubuntu5.3 Ubuntu 8.04 LTS: libpam-modules 0.99.7.1-5ubuntu6.4 libpam0g 0.99.7.1-5ubuntu6.4 In general, a standard system update will make all the necessary changes. References: https://bugs.launchpad.net/ubuntu/+source/pam/+bug/790538 Package Information: https://launchpad.net/ubuntu/+source/pam/1.1.2-2ubuntu8.3 https://launchpad.net/ubuntu/+source/pam/1.1.1-4ubuntu2.3 https://launchpad.net/ubuntu/+source/pam/1.1.1-2ubuntu5.3 https://launchpad.net/ubuntu/+source/pam/0.99.7.1-5ubuntu6.4 . Explore the regression issue related to PAM impacting cron services in Ubuntu, detailing affected versions and patch notes designed to enhance security measures. PAM Regression, Cron Functionality, Ubuntu Security Fix, Local Attack Mitigation. . LinuxSecurity.com Team

Calendar 2 May 31, 2011 Ubuntu
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[{"id":483,"title":"Self-taught through trial and error","votes":548,"type":"x","order":1,"pct":78.51,"resources":[]},{"id":484,"title":"Formal training or courses","votes":30,"type":"x","order":2,"pct":4.3,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.87,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.32,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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