12 April 2019
Protect yourself against future threats.
-----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 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. 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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-----