Vulnerability Monitor

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CVE-2015-5400

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.

Published

2015-09-28T20:59:03.280

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 6.8 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

6.4

Weaknesses

Type: Primary
CWE-264

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	fedoraproject	fedora	22	Yes
Operating System	debian	debian_linux	7.0	Yes
Operating System	debian	debian_linux	8.0	Yes
Application	squid-cache	squid	≤ 3.5.2	Yes

References

http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183598.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html ([email protected])
http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html ([email protected])
http://www.debian.org/security/2015/dsa-3327 ([email protected])
http://www.openwall.com/lists/oss-security/2015/07/06/8 ([email protected])
http://www.openwall.com/lists/oss-security/2015/07/09/12 ([email protected])
http://www.openwall.com/lists/oss-security/2015/07/10/2 ([email protected])
http://www.openwall.com/lists/oss-security/2015/07/17/14 Exploit ([email protected])
http://www.securityfocus.com/bid/75553 ([email protected])
http://www.securitytracker.com/id/1032873 ([email protected])
http://www.squid-cache.org/Advisories/SQUID-2015_2.txt Vendor Advisory ([email protected])
http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10494.patch Exploit, Vendor Advisory ([email protected])
http://www.squid-cache.org/Versions/v3/3.4/changesets/squid-3.4-13225.patch Exploit, Vendor Advisory ([email protected])
http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13856.patch Exploit, Vendor Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183598.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2015/dsa-3327 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/07/06/8 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/07/09/12 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/07/10/2 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/07/17/14 Exploit (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/75553 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1032873 (af854a3a-2127-422b-91ae-364da2661108)
http://www.squid-cache.org/Advisories/SQUID-2015_2.txt Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10494.patch Exploit, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.squid-cache.org/Versions/v3/3.4/changesets/squid-3.4-13225.patch Exploit, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13856.patch Exploit, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)