Squid < 2.6.STABLE18 Cache Update Reply Unspecified DoS

medium Nessus Plugin ID 29216

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Synopsis

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

Description

According to its banner, the version of the Squid proxy caching server installed on the remote host is older than 2.6.STABLE18. Such versions reportedly use incorrect bounds checking when processing some cache update replies. A client trusted to use the service may be able to leverage this issue to crash the application, thereby denying service to legitimate users.

Note that an earlier version of the advisory said 2.6.STABLE17 fixed the issue, but it turned out that the patch did not fully address the issue.

Solution

Either upgrade to Squid version 2.6.STABLE18 or later or apply the patch referenced in the project's advisory above.

Plugin Details

Severity: Medium

ID: 29216

File Name: squid_2_6_17.nasl

Version: 1.22

Type: remote

Family: Firewalls

Published: 12/4/2007

Updated: 11/15/2018

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

Vulnerability Information

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

Required KB Items: www/squid, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Reference Information

CVE: CVE-2007-6239, CVE-2008-1612

BID: 26687, 28693

CWE: 20

Detections

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