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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.1253 rssh vulnerabilities 12 April 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: rssh Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-1000018 CVE-2019-3464 CVE-2019-3463 Reference: ESB-2019.0360.2 ESB-2019.0306 Original Bulletin: http://www.ubuntu.com/usn/usn-3946-1 - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3946-1 April 11, 2019 rssh vulnerabilities ========================================================================== 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: rssh could be made to run arbitrary commands if it received specially crafted input. Software Description: - - rssh: Restricted shell allowing scp, sftp, cvs, svn, rsync or rdist Details: It was discovered that rssh incorrectly handled certain command-line arguments and environment variables. An authenticated user could bypass rssh's command restrictions, allowing an attacker to run arbitrary commands. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.10: rssh 2.3.4-8ubuntu0.2 Ubuntu 18.04 LTS: rssh 2.3.4-7ubuntu0.1 Ubuntu 16.04 LTS: rssh 2.3.4-4+deb8u2ubuntu0.16.04.2 Ubuntu 14.04 LTS: rssh 2.3.4-4+deb8u2ubuntu0.14.04.2 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3946-1 CVE-2019-1000018, CVE-2019-3463, CVE-2019-3464 Package Information: https://launchpad.net/ubuntu/+source/rssh/2.3.4-8ubuntu0.2 https://launchpad.net/ubuntu/+source/rssh/2.3.4-7ubuntu0.1 https://launchpad.net/ubuntu/+source/rssh/2.3.4-4+deb8u2ubuntu0.16.04.2 https://launchpad.net/ubuntu/+source/rssh/2.3.4-4+deb8u2ubuntu0.14.04.2 - --------------------------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 iQIVAwUBXK/eTmaOgq3Tt24GAQi3qRAAwYegFDR8+YAai/HFdvrfUJi1WfNTCMi8 PZ1LMyNwMzUUXVl7hy7ZZy/vwdYZStkT1SS6eIVeQnnISbgDQFRfD9gVPpThg7hp qLjfZSGxk5vMiU75RMPlkpI8lTBGuo+spj4iaUcoKplmRI/SqODP8LzbZunO8gEw VR+VHsQblazzK2BK+yTtstZiyw93QaEtc0fQ0jHkmS6aGkgumyS53b96E0V0KBtj yQsA64zLbqFSakxvHo8qPD9Wj3DOphxCiGG52apRPflqprg3R87mEuyGkbZ/0U9/ rkZHTZtCkgAu3sDeO39eC/BBSeQKYsHv1nPZYr1ilMb8c3kCX5SGQLMp4PDZ8V1y IQicTaLnPBx6WbIuky+r9io/67PxGPbUed03WUk1PyxnottVFypgwoJRUpe4Q6yQ qkTc3AVlkLllJ2SS4362BTAqc2o1IaV647t9zU7snlg2bEax0xJVxuKm5fMFNowD wRy9vwWhMH6fWXVGdsm4eNexLrQwyYh2atCzYl9bloIb/aNL651XrqhOTMQ70lCI frlxtO5zhTPcuVNQ4nvL8B2408f9Q3Os3eK4YjG2f2q/zmkFYsuySZLvqniNzqLw 5jZDGveOSb/mXK+iKQBjE5go8EZcmSBigH+uCoYqXfae9HY8VPVxARf3BuOvdBx/ u8GOVts5XIU= =Bo/E -----END PGP SIGNATURE-----