Squid 3.5.x < 3.5.15 Multiple Vulnerabilities

Medium Nessus Network Monitor Plugin ID 9774

Synopsis

The remote proxy server is affected by multiple attack vectors.

Description

Versions of Squid 3.5.x prior to 3.5.15 are affected by multiple vulnerabilities :

- A flaw is triggered when performing improper bounds checks on specially crafted HTTP responses. This may allow a remote attacker to cause a denial of service. (OSVDB 134900, OSVDB 134901)
- A flaw is triggered as bounds are not properly checked when processing HTTP responses. This may allow a remote attacker to cause a denial of service for all clients accessing the service. (OSVDB 136595)
- An overflow condition exists in the 'Icmp6::Recv()' function in 'icmp/Icmp6.cc' of the pinger binary. The issue is triggered as user-supplied input is not properly validated when handling specially crafted ICMPv6 packets. This may allow a remote attacker to cause a buffer overflow, crashing the pinger process or potentially leaking data into log files. (OSVDB 136596)

Solution

Either upgrade to Squid version 3.5.15 or later, or apply the vendor-supplied patch.

See Also

http://www.squid-cache.org/Advisories/SQUID-2016_4.txt

http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14016.patch

Plugin Details

Severity: Medium

ID: 9774

File Name: 9774.prm

Family: Web Servers

Published: 2016/11/11

Modified: 2016/11/23

Dependencies: 3389

Nessus ID: 89080

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 5

Temporal Score: 4.3

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

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

CVSSv3

Base Score: 5.3

Temporal Score: 5

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

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

Vulnerability Information

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

Patch Publication Date: 2016/04/02

Vulnerability Publication Date: 2016/04/02

Reference Information

CVE: CVE-2016-2569, CVE-2016-2570, CVE-2016-3947, CVE-2016-3948

BID: 83406, 85803, 85805