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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.0436 snapd vulnerability 13 February 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: snapd Publisher: Ubuntu Operating System: Ubuntu Linux variants Impact/Access: Root Compromise -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-7304 Original Bulletin: http://www.ubuntu.com/usn/usn-3887-1 - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3887-1 February 12, 2019 snapd 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: snapd could be made to run programs as an administrator. Software Description: - - snapd: Daemon and tooling that enable snap packages Details: Chris Moberly discovered that snapd versions 2.28 through 2.37 incorrectly validated and parsed the remote socket address when performing access controls on its UNIX socket. A local attacker could use this to access privileged socket APIs and obtain administrator privileges. On Ubuntu systems with snaps installed, snapd typically will have already automatically refreshed itself to snapd 2.37.1 which is unaffected. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.10: snapd 2.35.5+18.10.1 Ubuntu 18.04 LTS: snapd 2.34.2+18.04.1 Ubuntu 16.04 LTS: snapd 2.34.2ubuntu0.1 Ubuntu 14.04 LTS: snapd 2.34.2~14.04.1 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3887-1 CVE-2019-7304, https://launchpad.net/bugs/1813365 Package Information: https://launchpad.net/ubuntu/+source/snapd/2.35.5+18.10.1 https://launchpad.net/ubuntu/+source/snapd/2.34.2+18.04.1 https://launchpad.net/ubuntu/+source/snapd/2.34.2ubuntu0.1 https://launchpad.net/ubuntu/+source/snapd/2.34.2~14.04.1 - --------------------------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 auscert@auscert.org.au 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. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. 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: auscert@auscert.org.au 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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXGN9B2aOgq3Tt24GAQiOOQ/9GcmZZNwn9VkMPE2EIQmbg5k89tPA6ksR RUbMd8/BPkOvOL4HUXuXqUCRJVOIF8STzYzxgFRSPk2sVB78zHwrnmQ+XWlEEPQA XQ3HK76uUetSN5lY7yQLTtwfsAMVXvg3jk/H2b3rUMDWseGoLFCS0kuRrZ2PcdxV 8hO4eReCmU/oeBxl75frXSPG2hT5U3sm+r/GVVf+2ykcbxqdevX2aWL9Y8Hs6/T8 nsjjEYVazPDmtjFtk926p4PrLmExrY9HWUXar0eWaX8h1LCV0wvV8nBEPsCzA89o uA+Q+glyl7RWvKpXQ4lUGbVd7I3LGywktnDR5v0ygQZfqAMy0Udg8xC2/ZIKqqgW Pw1XzbgqXLJJSTkdn6hC08LnCDd3sx+7DRRs21UDNji63qyVZ7b7OgTNyZ9V2iQn z70qJATC4daza3WLW/OqDW1sqq7U9CYTe7dcmdPHDW8oL1kJei/U8YCWPXOqIYs3 gZDFRuWr960hu9hkkl0MQ9TB4Ng3Hd1YlIVuLwrx5rCsBIXkg1Q5m7y39uvFk6YQ vhlKC79jGv0rP4jeRgih+IJSqBmGfgVQoqhDMp0nMtxOrX3WVNhOOlhyrt0mdjpK xH4yArvOt4kwlYqV8ea8ayxo1jGmNioiDaopfj7lUzF8qRGiNQv5ixSZLZ+stqOE y2JRU8KovXY= =w8Lm -----END PGP SIGNATURE-----