VulnerabilityModified
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.
MEDIUM 6.8EPSS 20.8%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 20.8%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 2.0
- 6.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
- EPSS
- 20.84% probability · 97th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- fedoraproject/fedora · debian/debian linux · squid-cache/squid
- Source
- cve@mitre.org
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.