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. (OSVDB 137402)
- 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. (OSVDB 137403)
- 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. (OSVDB 137404)
- 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. (OSVDB 137405)

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

File Name: 9775.prm

Family: Web Servers

Published: 2016/11/11

Modified: 2016/11/23

Dependencies: 3389

Nessus ID: 91194

Risk Information

Risk Factor: Medium

CVSSv2

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

CVSSv3

Base Score: 5.6

Temporal Score: 5.3

Vector: CVSS3#AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Temporal Vector: CVSS3#E:X/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:squid-cache:squid

Patch Publication Date: 2016/04/20

Vulnerability Publication Date: 2016/04/20

Reference Information

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

BID: 86788, 92358

OSVDB: 137402, 137403, 137404, 137405