Debian DLA-478-1 : squid3 security update

medium Nessus Plugin ID 91173

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VPR Score: 5.9

Synopsis

The remote Debian host is missing a security update.

Description

Several security issues have been discovered in the Squid caching proxy.

CVE-2016-4051

CESG and Yuriy M. Kaminskiy discovered that Squid cachemgr.cgi was vulnerable to a buffer overflow when processing remotely supplied inputs relayed through Squid.

CVE-2016-4052

CESG discovered that a buffer overflow made Squid vulnerable to a Denial of Service (DoS) attack when processing ESI responses.

CVE-2016-4053

CESG found that Squid was vulnerable to public information disclosure of the server stack layout when processing ESI responses.

CVE-2016-4054

CESG discovered that Squid was vulnerable to remote code execution when processing ESI responses.

CVE-2016-4554

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.

Solution

Upgrade the affected packages.

Plugin Details

Severity: Medium

ID: 91173

File Name: debian_DLA-478.nasl

Version: 2.10

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 5/17/2016

Updated: 1/11/2021

Dependencies: ssh_get_info.nasl

Risk Information

Risk Factor: Medium

VPR Score: 5.9

CVSS v2.0

Base Score: 6.8

Temporal Score: 5

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:squid-cgi, p-cpe:/a:debian:debian_linux:squid3, p-cpe:/a:debian:debian_linux:squid3-common, p-cpe:/a:debian:debian_linux:squid3-dbg, p-cpe:/a:debian:debian_linux:squidclient, cpe:/o:debian:debian_linux:7.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 5/16/2016

Reference Information

CVE: CVE-2016-4051, CVE-2016-4052, CVE-2016-4053, CVE-2016-4054, CVE-2016-4554, CVE-2016-4555, CVE-2016-4556