09 April 2019
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.1185 systemd vulnerability 9 April 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: systemd Publisher: Ubuntu Operating System: Ubuntu Linux variants Impact/Access: Increased Privileges -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-3842 Original Bulletin: http://www.ubuntu.com/usn/usn-3938-1 Comment: This advisory references vulnerabilities in products which run on platforms other than Ubuntu. It is recommended that administrators running systemd check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================= Ubuntu Security Notice USN-3938-1 April 08, 2019 systemd vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 18.10 - - Ubuntu 18.04 LTS - - Ubuntu 16.04 LTS - - Ubuntu 14.04 LTS Summary: The systemd PAM module could be used to gain additional PolicyKit privileges. Software Description: - - systemd: system and service manager Details: Jann Horn discovered that pam_systemd created logind sessions using some parameters from the environment. A local attacker could exploit this in order to spoof the active session and gain additional PolicyKit privileges. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.10: Â libpam-systemd Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 239-7ubuntu10.12 Ubuntu 18.04 LTS: Â libpam-systemd Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 237-3ubuntu10.19 Ubuntu 16.04 LTS: Â libpam-systemd Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 229-4ubuntu21.21 Ubuntu 14.04 LTS: Â libpam-systemd Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 204-5ubuntu20.31 In general, a standard system update will make all the necessary changes. References: Â https://usn.ubuntu.com/usn/usn-3938-1 Â CVE-2019-3842 Package Information: Â https://launchpad.net/ubuntu/+source/systemd/239-7ubuntu10.12 Â https://launchpad.net/ubuntu/+source/systemd/237-3ubuntu10.19 Â https://launchpad.net/ubuntu/+source/systemd/229-4ubuntu21.21 Â https://launchpad.net/ubuntu/+source/systemd/204-5ubuntu20.31 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to email@example.com and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. 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Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: firstname.lastname@example.org Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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