Squid 3.x < 3.2.12 / 3.3.x < 3.3.7 idnsALookup HTTP Request DoS

high Nessus Plugin ID 69041
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The remote proxy server is affected by a denial of service vulnerability.


According to its banner, the version of Squid running on the remote host is 3.x prior to 3.2.12 or 3.3.x prior to 3.3.7 and is, therefore, affected by a denial of service vulnerability. A buffer overflow exists in the 'idnsALookup' function in the file 'dns_internal.cc' that could allow specially crafted HTTP requests that could result in a denial of service.

Note that Nessus has relied only on the version in the proxy server's banner, which is not updated by the patch that the project has released to address this issue. If this patch has been applied properly and the service has been restarted, consider this to be a false positive.


Either upgrade to Squid version 3.2.12 / 3.3.7 or later, or apply the vendor-supplied patch.

See Also






Plugin Details

Severity: High

ID: 69041

File Name: squid_3_2_12.nasl

Version: 1.7

Type: remote

Family: Firewalls

Published: 7/24/2013

Updated: 11/27/2019

Dependencies: squid_version.nasl

Configuration: Enable paranoid mode

Risk Information

CVSS Score Source: CVE-2013-4115


Risk Factor: Medium

Score: 5.8


Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

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

Vulnerability Information

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

Required KB Items: www/squid, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 7/11/2013

Vulnerability Publication Date: 7/11/2013

Reference Information

CVE: CVE-2013-4115

BID: 61111