CVE-2019-12523

Priority
Description
An issue was discovered in Squid before 4.9. When handling a URN request, a
corresponding HTTP request is made. This HTTP request doesn't go through
the access checks that incoming HTTP requests go through. This causes all
access checks to be bypassed and allows access to restricted HTTP servers,
e.g., an attacker can connect to HTTP servers that only listen on
localhost.
Assigned-to
mdeslaur
Notes
mdeslaurThis was fixed in 4.x by rewriting the URI parser to use SBuf.
Backporting the 4.x commit to 3.x is problematic.
As of 2019-12-04, no backport to 3.x is available, and no
details or reproducer for the issue is available to develop a
specific fix for 3.x.
Package
Source: squid (LP Ubuntu Debian)
Upstream:released (4.9-1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.04 (Disco Dingo):released (4.4-1ubuntu2.3)
Ubuntu 19.10 (Eoan Ermine):released (4.8-1ubuntu2.1)
Ubuntu 20.04 (Focal Fossa):released (4.9-2ubuntu1)
Patches:
Upstream:http://www.squid-cache.org/Versions/v4/changesets/squid-4-fbbdf75efd7a5cc244b4886a9d42ea458c5a3a73.patch
Package
Upstream:needs-triage
Ubuntu 12.04 ESM (Precise Pangolin):needs-triage
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):deferred (2019-12-04)
Ubuntu 18.04 LTS (Bionic Beaver):deferred (2019-12-04)
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Ubuntu 20.04 (Focal Fossa):DNE
More Information

Updated: 2019-12-05 19:59:23 UTC (commit 0aa5e7c87c8b55d2ec5c7f4ca1179cf75de91961)