Squid < 3.0.STABLE23 /

medium Nessus Plugin ID 44384
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote proxy server is prone to a denial of service attack.


According to its banner, the version of the Squid proxy caching server installed on the remote host is 2.x or older than 3.0.STABLE23 / Such versions reportedly fail to correctly validate DNS packets, which can be abused by a remote attack to cause a short-term denial of service.

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


Either upgrade to Squid version 3.0.STABLE23 / or later or apply the appropriate patch referenced in the project's advisory above.

See Also





Plugin Details

Severity: Medium

ID: 44384

File Name: squid_3_0_23.nasl

Version: 1.16

Type: remote

Family: Firewalls

Published: 2/2/2010

Updated: 9/17/2018

Dependencies: squid_version.nasl

Configuration: Enable paranoid mode

Risk Information

CVSS Score Source: CVE-2010-0308

CVSS Score Rationale: The squid-2010_1 advisory mentions that any external server who can determine the squid receiving port can perform the attack, so authentication is set to none.


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: AV:N/AC:L/Au:N/C:N/I:N/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: 2/1/2010

Vulnerability Publication Date: 1/29/2010

Reference Information

CVE: CVE-2010-0308

BID: 37522

Secunia: 38451, 38455

CWE: 20