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CVE-2016-2570

Published: 27 February 2016

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.

Notes

AuthorNote
mdeslaur
needs substantial backporting
There are no current plans to fix this CVE in Ubuntu 12.04 LTS
and Ubuntu 14.04 LTS.

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
squid3
Launchpad, Ubuntu, Debian
upstream
Released (3.5.15, 4.0.7)
precise Ignored

trusty Does not exist
(trusty was ignored)
artful Not vulnerable
(3.5.23-5ubuntu1)
wily Ignored
(end of life)
xenial
Released (3.5.12-1ubuntu7.5)
yakkety Ignored
(end of life)
zesty Ignored
(end of life)
Patches:
upstream: http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13993.patch

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H