FreeBSD : squid -- multiple vulnerabilities (e05bfc92-0763-11e6-94fa-002590263bf5)

This script is Copyright (C) 2016 Tenable Network Security, Inc.


Synopsis :

The remote FreeBSD host is missing a security-related update.

Description :

Squid security advisory 2016:5 reports :

Due to incorrect buffer management Squid cachemgr.cgi tool is
vulnerable to a buffer overflow when processing remotely supplied
inputs relayed to it from Squid.

This problem allows any client to seed the Squid manager reports with
data that will cause a buffer overflow when processed by the
cachemgr.cgi tool. However, this does require manual administrator
actions to take place. Which greatly reduces the impact and possible
uses.

Squid security advisory 2016:6 reports :

Due to buffer overflow issues Squid is vulnerable to a denial of
service attack when processing ESI responses. Due to incorrect input
validation Squid is vulnerable to public information disclosure of the
server stack layout when processing ESI responses. Due to incorrect
input validation and buffer overflow Squid is vulnerable to remote
code execution when processing ESI responses.

These problems allow ESI components to be used to perform a denial of
service attack on the Squid service and all other services on the same
machine. Under certain build conditions these problems allow remote
clients to view large sections of the server memory. However, the bugs
are exploitable only if you have built and configured the ESI features
to be used by a reverse-proxy and if the ESI components being
processed by Squid can be controlled by an attacker.

See also :

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208939
http://www.squid-cache.org/Advisories/SQUID-2016_5.txt
http://www.squid-cache.org/Advisories/SQUID-2016_6.txt
http://www.nessus.org/u?5ecec5c7

Solution :

Update the affected package.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 90608 ()

Bugtraq ID:

CVE ID: CVE-2016-4051
CVE-2016-4052
CVE-2016-4053
CVE-2016-4054

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