Debian DLA-478-1 : squid3 security update
Medium Nessus Plugin ID 91173
SynopsisThe remote Debian host is missing a security update.
DescriptionSeveral security issues have been discovered in the Squid caching proxy.
CESG and Yuriy M. Kaminskiy discovered that Squid cachemgr.cgi was vulnerable to a buffer overflow when processing remotely supplied inputs relayed through Squid.
CESG discovered that a buffer overflow made Squid vulnerable to a Denial of Service (DoS) attack when processing ESI responses.
CESG found that Squid was vulnerable to public information disclosure of the server stack layout when processing ESI responses.
CESG discovered that Squid was vulnerable to remote code execution when processing ESI responses.
Jianjun Chen found that Squid was vulnerable to a header smuggling attack that could lead to cache poisoning and to bypass of same-origin security policy in Squid and some client browsers.
CVE-2016-4555 and CVE-2016-4556
'bfek-18' and '@vftable' found that Squid was vulnerable to a Denial of Service (DoS) attack when processing ESI responses, due to incorrect pointer handling and reference counting.
For Debian 7 'Wheezy', these issues have been fixed in squid3 version 3.1.20-2.2+deb7u5. We recommend you to upgrade your squid3 packages.
Learn more about the Debian Long Term Support (LTS) Project and how to apply these updates at: https://wiki.debian.org/LTS/
NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
SolutionUpgrade the affected packages.