CVE-2019-3877

Published: 22 March 2019

A vulnerability was found in mod_auth_mellon before v0.14.2. An open redirect in the logout URL allows requests with backslashes to pass through by assuming that it is a relative URL, while the browsers silently convert backslash characters into forward slashes treating them as an absolute URL. This mismatch allows an attacker to bypass the redirect URL validation logic in apr_uri_parse function.

Priority

Medium

CVSS 3 base score: 6.1

Status

Package Release Status
libapache2-mod-auth-mellon
Launchpad, Ubuntu, Debian
Upstream
Released (0.14.2-1)
Ubuntu 20.10 (Groovy Gorilla)
Released (0.14.2-1ubuntu1)
Ubuntu 20.04 LTS (Focal Fossa)
Released (0.14.2-1ubuntu1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (0.13.1-1ubuntu0.1)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (0.12.0-2+deb9u1build0.16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was needs-triage)
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

Patches:
Upstream: https://github.com/Uninett/mod_auth_mellon/commit/62041428a32de402e0be6ba45fe12df6a83bedb8