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.
Metrics
CVSS 2.0 6.8/10
AV:N/AC:M/Au:N/C:P/I:P/A:PWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- 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/2015/07/17/14Exploit
- http://www.securityfocus.com/bid/75553
- http://www.securitytracker.com/id/1032873
- http://www.squid-cache.org/Advisories/SQUID-2015_2.txtVendor Advisory
- http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10494.patchExploit, Vendor Advisory
- http://www.squid-cache.org/Versions/v3/3.4/changesets/squid-3.4-13225.patchExploit, Vendor Advisory
- http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13856.patchExploit, Vendor Advisory
- 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/2015/07/17/14Exploit
- http://www.securityfocus.com/bid/75553
- http://www.securitytracker.com/id/1032873
- http://www.squid-cache.org/Advisories/SQUID-2015_2.txtVendor Advisory
- http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10494.patchExploit, Vendor Advisory
- http://www.squid-cache.org/Versions/v3/3.4/changesets/squid-3.4-13225.patchExploit, Vendor Advisory
- http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13856.patchExploit, Vendor Advisory
Timeline
- Published
- Sep 28, 2015
- Last modified
- Jun 17, 2026
- NVD status
- Modified