CVE-2016-2570
The Edge Side Includes (ESI) parser in Squid 3.x before 3.5.15 and 4.x before 4.0.7 does not check buffer limits during XML parsing, which allows remote HTTP servers to cause a denial of service (assertion failure and daemon exit) via a crafted XML…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (8.95%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The Edge Side Includes (ESI) parser in Squid 3.x before 3.5.15 and 4.x before 4.0.7 does not check buffer limits during XML parsing, which allows remote HTTP servers to cause a denial of service (assertion failure and daemon exit) via a crafted XML document, related to esi/CustomParser.cc and esi/CustomParser.h.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 8.95% probability · 95th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- squid-cache/squid
- Source
- cve@mitre.org
References
- 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://rhn.redhat.com/errata/RHSA-2016-2600.html
- http://www.openwall.com/lists/oss-security/2016/02/26/2
- http://www.securitytracker.com/id/1035101
- http://www.squid-cache.org/Advisories/SQUID-2016_2.txtVendor Advisory
- http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13993.patch
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-14549.patch
- https://security.gentoo.org/glsa/201607-01
- https://usn.ubuntu.com/3557-1/
- 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://rhn.redhat.com/errata/RHSA-2016-2600.html
- http://www.openwall.com/lists/oss-security/2016/02/26/2
- http://www.securitytracker.com/id/1035101
- http://www.squid-cache.org/Advisories/SQUID-2016_2.txtVendor Advisory
- http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13993.patch
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-14549.patch
- https://security.gentoo.org/glsa/201607-01
- https://usn.ubuntu.com/3557-1/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.