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AUSCERT External Security Bulletin Redistribution
ESB-2019.1049
USN-3924-1: mod_auth_mellon vulnerabilities
29 March 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: mod_auth_mellon
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Provide Misleading Information -- Remote/Unauthenticated
Unauthorised Access -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-3878 CVE-2019-3877
Reference: ESB-2019.0965.2
Original Bulletin:
https://usn.ubuntu.com/3924-1/
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USN-3924-1: mod_auth_mellon vulnerabilities
28 March 2019
libapache2-mod-auth-mellon vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 18.10
o Ubuntu 18.04 LTS
Summary
Several security issues were fixed in mod_auth_mellon.
Software Description
o libapache2-mod-auth-mellon - SAML 2.0 authentication module for Apache
Details
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 18.10
libapache2-mod-auth-mellon - 0.14.0-1ubuntu0.1
Ubuntu 18.04 LTS
libapache2-mod-auth-mellon - 0.13.1-1ubuntu0.1
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
In general, a standard system update will make all the necessary changes.
References
o CVE-2019-3877
o CVE-2019-3878
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