Detections
Analytics

Ubuntu 4.10 : squid vulnerabilities (USN-77-1)

high Nessus Plugin ID 20699

Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

A possible authentication bypass was discovered in the LDAP authentication backend. LDAP ignores leading and trailing whitespace in search filters. This could possibly be abused to bypass explicit access controls or confuse accounting when using several variants of the login name. (CAN-2005-0173)

Previous Squid versions were not strict enough while parsing HTTP requests and responses. Various violations of the HTTP protocol, such as multiple Content-Length header lines, invalid 'Carriage Return' characters, and HTTP header names containing whitespace, led to cache pollution and could possibly be exploited to deliver wrong content to clients. (CAN-2005-0174)

Squid was susceptible to a cache poisoning attack called 'HTTP response splitting', where false replies are injected in the HTTP stream. This allowed malicious web servers to forge wrong cache content for arbitrary websites, which was then delivered to Squid clients. (CAN-2005-0175)

The FSC Vulnerability Research Team discovered a buffer overflow in the WCCP handling protocol. By sending an overly large WCCP packet, a remote attacker could crash the Squid server, and possibly even execute arbitrary code with the privileges of the 'proxy' user.
(CAN-2005-0211).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 20699

File Name: ubuntu_USN-77-1.nasl

Version: 1.15

Type: local

Agent: unix

Published: 1/15/2006

Updated: 1/19/2021

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.5

CVSS v2

Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:squid, p-cpe:/a:canonical:ubuntu_linux:squid-cgi, p-cpe:/a:canonical:ubuntu_linux:squid-common, p-cpe:/a:canonical:ubuntu_linux:squidclient, cpe:/o:canonical:ubuntu_linux:4.10

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Patch Publication Date: 2/7/2005

Reference Information

CVE: CVE-2005-0173, CVE-2005-0174, CVE-2005-0175, CVE-2005-0211

USN: 77-1