CVE-2015-5400
medium
CVSS v3
—
CVSS v4 NEW
—
VIR risk
6.8
Description
Squid before 3.5.6 does not properly handle CONNECT method peer responses when configured with cache_peer, which allows remote attackers to bypass intended restrictions and gain access to a backend proxy via a CONNECT request.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Fedora Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| 22 | Affected | — |
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Mixed 7 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 4.1-1 |
| sid | Fixed | 4.1-1 |
| forky | Fixed | 4.1-1 |
| bullseye | Fixed | 4.1-1 |
| bookworm | Fixed | 4.1-1 |
| 8.0 | Affected | — |
| 7.0 | Affected | — |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| squid-cache | squid | {"endIncluding":"3.5.2"} | |
References
- https://www.suse.com/security/cve/CVE-2015-5400.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183598.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html
- http://www.debian.org/security/2015/dsa-3327
- http://www.openwall.com/lists/oss-security/2015/07/06/8
- http://www.openwall.com/lists/oss-security/2015/07/09/12
- http://www.openwall.com/lists/oss-security/2015/07/10/2
- http://www.openwall.com/lists/oss-security/2015/07/17/14
- http://www.securityfocus.com/bid/75553
- http://www.securitytracker.com/id/1032873
- http://www.squid-cache.org/Advisories/SQUID-2015_2.txt
- http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10494.patch
- http://www.squid-cache.org/Versions/v3/3.4/changesets/squid-3.4-13225.patch
- http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13856.patch
- https://security-tracker.debian.org/tracker/CVE-2015-5400
CWEs
CWE-264
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.