Squid 3.5.x < 3.5.17 Multiple Vulnerabilities

medium Nessus Network Monitor Plugin ID 9775

Synopsis

The remote proxy server is affected by multiple attack vectors.

Description

Versions of Squid 3.5.x prior to 3.5.17 are affected by multiple vulnerabilities :

- A flaw in 'esi/Esi.cc' is triggered as input is not properly validated when handling ESI responses. This may allow a remote attacker to disclose the server stack layout.
- An overflow condition in 'esi/Esi.cc' is triggered as user-supplied input is not properly validated when handling ESI responses. This may allow a remote attacker to cause a buffer overflow, resulting in a denial of service or potentially allowing the execution of arbitrary code.
- An assertion flaw in 'esi/Esi.cc' is triggered as input is not properly validated when handling ESI responses. This may allow a remote attacker to terminate the service.
- An overflow condition is triggered as user-supplied input is not properly validated when processing the length of content lines in reports by the 'cachemgr.cgi' tool. This may allow a remote attacker to cause a buffer overflow, resulting in a denial of service or potentially allowing the execution of arbitrary code.

Solution

Either upgrade to Squid version 3.5.17 or later, or apply the vendor-supplied patch.

See Also

http://www.squid-cache.org/Advisories/SQUID-2016_6.txt

http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14034.patch

Plugin Details

Severity: Medium

ID: 9775

Family: Web Servers

Published: 11/11/2016

Updated: 3/6/2019

Nessus ID: 91194

Risk Information

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

CVSS v3

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 5.4

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

Temporal Vector: CVSS:3.0/E:X/RL:O/RC:C

Vulnerability Information

CPE: cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*

Patch Publication Date: 4/20/2016

Vulnerability Publication Date: 4/20/2016

Reference Information

CVE: CVE-2016-4051, CVE-2016-4052, CVE-2016-4053, CVE-2016-4054, CVE-2016-5408

BID: 86788, 92358