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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.3653 USN-4597-1: mod_auth_mellon vulnerabilities 23 October 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: mod_auth_mellon Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Cross-site Scripting -- Remote with User Interaction Provide Misleading Information -- Remote with User Interaction Unauthorised Access -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-3878 CVE-2019-3877 CVE-2017-6807 Reference: ESB-2019.4141 ESB-2019.1599 ESB-2019.1316 ESB-2019.1256 Original Bulletin: https://usn.ubuntu.com/4597-1/ - --------------------------BEGIN INCLUDED TEXT-------------------- USN-4597-1: mod_auth_mellon vulnerabilities 22 October 2020 Several security issues were fixed in mod_auth_mellon. Releases o Ubuntu 16.04 LTS Packages o libapache2-mod-auth-mellon - SAML 2.0 authentication module for Apache Details Francois Kooman discovered that mod_auth_mellon incorrectly handled cookies. An attacker could possibly use this issue to cause a Cross-Site Session Transfer attack. (CVE-2017-6807) It was discovered that mod_auth_mellon incorrectly handled certain requests. An attacker could possibly use this issue to redirect a user to a malicious URL. (CVE-2019-3877) It was discovered that mod_auth_mellon incorrectly handled certain requests. An attacker could possibly use this issue to access sensitive information. (CVE-2019-3878) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 o libapache2-mod-auth-mellon - 0.12.0-2+deb9u1build0.16.04.1 In general, a standard system update will make all the necessary changes. References o CVE-2019-3877 o CVE-2019-3878 o CVE-2017-6807 Related notices o USN-3924-1 : libapache2-mod-auth-mellon - --------------------------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. 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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). 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