12 September 2018
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.2718 Zsh vulnerabilities 12 September 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: zsh Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-13259 CVE-2018-1100 CVE-2018-0502 Reference: ESB-2018.2714 ESB-2018.1803 Original Bulletin: http://www.ubuntu.com/usn/usn-3764-1 - --------------------------BEGIN INCLUDED TEXT-------------------- USN-3764-1: Zsh vulnerabilities 11 September 2018 zsh vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 18.04 LTS o Ubuntu 16.04 LTS o Ubuntu 14.04 LTS Summary Zsh could be made to execute arbitrary code if it received a specially crafted script. Software Description o zsh - shell with lots of features Details It was discovered that Zsh incorrectly handled certain scripts. An attacker could possibly use this issue to execute arbitrary code. (CVE-2018-0502, CVE-2018-13259) Richard Maciel Costa discovered that Zsh incorrectly handled certain scripts. An attacker could possibly use this issue to execute arbitrary code. (CVE-2018-1100) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS zsh - 5.4.2-3ubuntu3.1 Ubuntu 16.04 LTS zsh - 5.1.1-1ubuntu2.3 Ubuntu 14.04 LTS zsh - 5.0.2-3ubuntu6.3 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. After a standard system update you need to restart Zsh to make all the necessary changes. References o CVE-2018-0502 o CVE-2018-1100 o CVE-2018-13259 - --------------------------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 firstname.lastname@example.org 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: email@example.com 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 iQIVAwUBW5iuH2aOgq3Tt24GAQhMzhAAjPcIUfBwrcWLyk30bxLdNzehrpEOHxou 8pgS5R0qN1QdVGfgIZcIGyK9a5qpgNxJ8qYq9054lESFCetallgLQNG5XF9iacwb c6C1RDitXoAffDj1elnW7D7c+bcxX1FTYnpY51wX+Add3K5xakyl0a9H/sdolS6f iWW7vtinRCpEuqhNTLjWVq8rAxcyOWS1a6joAUrFc2j8otycjJZJvaN9BtJkvi2r uFhM9mOOyegZco1Ft6cWcIo78SnrB2SB2Sh5qvLE+UwDnX4Pq2Hy/DYkVVeZGzy3 WqWpDGrC1twvdQ4vlzuVwKUMkxEW/ewLQ+uvBLXJ35iSX1XWafjiTUhlF4rN95y0 OUpAOvwDLRqUf5jqPqWVPh1PnLgJoQ4pN4U93No2zlpVIAGowV0dmbqMDqKr427l DzxgEKE3Qvnyo0yhL7sSBLzXEDpBtKJvh7jDA/JthX4IZvoTeU8HE22/GYaXBEiQ AhZInPgmcDSxXzZofbaGjMETmbwzgw+dHqEE1yDwaKkJmfX5YGEalJdArcAxQf/r BcPMUiooBEPc2fe02OVUanvSndX19t1OaWS9eY35ImqFay1Lba5Xrg8EW8wv63tq /LOB3+j+pCmVJDLO4WRQTshRXwYGmr0hsG799rGAiRLq/zKr3Igebbr/2L+yq9/F f7M3adto9AI= =xvJZ -----END PGP SIGNATURE-----