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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2115.2 salt -- Maliciously crafted minion IDs can cause unwanted directory traversals on the Salt-master 24 November 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: SaltStack Publisher: FreeBSD Operating System: FreeBSD UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Denial of Service -- Remote/Unauthenticated Access Confidential Data -- Remote/Unauthenticated Unauthorised Access -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-14696 CVE-2017-14695 CVE-2017-12791 Original Bulletin: http://www.vuxml.org/freebsd/3531141d-a708-477c-954a-2a0549e49ca9.html http://www.vuxml.org/freebsd/50127e44-7b88-4ade-8e12-5d57320823f1.html Comment: This advisory references vulnerabilities in products which run on platforms other than FreeBSD. It is recommended that administrators running salt check for an updated version of the software for their operating system. Revision History: November 24 2017: Original fix introduced new vulnerabilities; these have been patched August 23 2017: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection salt -- multiple vulnerabilities Affected packages py27-salt < 2016.11.8 2017.7.0 <= py27-salt < 2017.7.2 py32-salt < 2016.11.8 2017.7.0 <= py32-salt < 2017.7.2 py33-salt < 2016.11.8 2017.7.0 <= py33-salt < 2017.7.2 py34-salt < 2016.11.8 2017.7.0 <= py34-salt < 2017.7.2 py35-salt < 2016.11.8 2017.7.0 <= py35-salt < 2017.7.2 py36-salt < 2016.11.8 2017.7.0 <= py36-salt < 2017.7.2 Details VuXML ID 50127e44-7b88-4ade-8e12-5d57320823f1 Discovery 2017-10-09 Entry 2017-11-23 SaltStack reports: Directory traversal vulnerability in minion id validation in SaltStack. Allows remote minions with incorrect credentials to authenticate to a master via a crafted minion ID. Credit for discovering the security flaw goes to: Julian Brost (julian@0x4a42.net). NOTE: this vulnerability exists because of an incomplete fix for CVE-2017-12791. Remote Denial of Service with a specially crafted authentication request. Credit for discovering the security flaw goes to: Julian Brost (julian@0x4a42.net) References CVE CVE-2017-14695 Name CVE CVE-2017-14696 Name URL https://docs.saltstack.com/en/2016.11/topics/releases/2016.11.8.html URL https://docs.saltstack.com/en/latest/topics/releases/2017.7.2.html URL https://github.com/saltstack/salt/commit/ 5f8b5e1a0f23fe0f2be5b3c3e04199b57a53db5b URL https://github.com/saltstack/salt/commit/ 80d90307b07b3703428ecbb7c8bb468e28a9ae6d - ------------------------------------------------------------ salt -- Maliciously crafted minion IDs can cause unwanted directory traversals on the Salt-master Affected packages py27-salt < 2016.11.7 2017.7.0 <= py27-salt < 2017.7.1 py32-salt < 2016.11.7 2017.7.0 <= py32-salt < 2017.7.1 py33-salt < 2016.11.7 2017.7.0 <= py33-salt < 2017.7.1 py34-salt < 2016.11.7 2017.7.0 <= py34-salt < 2017.7.1 py35-salt < 2016.11.7 2017.7.0 <= py35-salt < 2017.7.1 py36-salt < 2016.11.7 2017.7.0 <= py36-salt < 2017.7.1 Details VuXML ID 3531141d-a708-477c-954a-2a0549e49ca9 Discovery 2017-08-16 Entry 2017-08-22 SaltStack reports: Correct a flaw in minion id validation which could allow certain minions to authenticate to a master despite not having the correct credentials. To exploit the vulnerability, an attacker must create a salt-minion with an ID containing characters that will cause a directory traversal. Credit for discovering the security flaw goes to: Vernhk@qq.com References CVE Name CVE-2017-12791 URL https://docs.saltstack.com/en/latest/topics/releases/2016.11.7.html URL https://docs.saltstack.com/en/latest/topics/releases/2017.7.1.html - --------------------------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. 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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: 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 iQIVAwUBWhdw9ox+lLeg9Ub1AQg4VQ/9FBuF5JUZn0m4JTaA9If0dwzZAmOywBTM 3r4SdUUiChvgAYOLi6hEedMAYdiBgzi3Rne56dSY6+iZvH+JmztMXnYSw+UFooX8 Z1sUfLKFLvfpUvAMJ4CDnzzY8thz+BcxTPtyObxgJXz8djoWy5nvIUJkNmUlTbK9 Zn8v5PMLI6TDU5fNfVdvOEdbZKXqUjgmlcdNmtCp3iXY68MQx7CZc8HLIGL19IQ2 xtgLM12kvIBUM8peEMif72BLTqeqpgfV7d7dh7tZQpbZ2V800bYbuXkAge3EMDOt hhUClimx3LV89i4Cczpl5e7POkaO+01XfqntnhP5Ek8OKiA0vnTI/t1QKpgY5m7l N/Jfv3zRiGCv0DzGd9U2oloZFu3Fp78qQ8f65s50fkwYebS0LotzgOvqJJMsLTtz yPxySy7cfQVTy4FUtRreAi8lExjrPLh38pfIwoRYHHqRXdxz8UKR0X+GWx+SRheG q3+dGk13vUnsQtExGAj04hsaFDlQhuxE/KZlLEWrPDBAOE3TyWQWFzVGReB1sTeI VAdGgMsp7tnwaaSyzcIqS5sHbYZLbtt+P6VJeoJC/oy/5FRDDUQ+w/ZR1eQFc8Xp 7Wl8LFNMbs6hwjIU5Jw+nkVPeGG02aItKmTDZ7KQYUqQuMWgxKscVrTVJC7/a54y +INbw5STb5U= =F01z -----END PGP SIGNATURE-----