Scientific Linux Security Update : squid on SL5.x i386/x86_64

Medium Nessus Plugin ID 60775

New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.

VPR Score: 4.4

Synopsis

The remote Scientific Linux host is missing a security update.

Description

A flaw was found in the way Squid processed certain external ACL helper HTTP header fields that contained a delimiter that was not a comma. A remote attacker could issue a crafted request to the Squid server, causing excessive CPU use (up to 100%). (CVE-2009-2855)

Note: The CVE-2009-2855 issue only affected non-default configurations that use an external ACL helper script.

A flaw was found in the way Squid handled truncated DNS replies. A remote attacker able to send specially crafted UDP packets to Squid's DNS client port could trigger an assertion failure in Squid's child process, causing that child process to exit. (CVE-2010-0308)

This update also fixes the following bugs :

- Squid's init script returns a non-zero value when trying to stop a stopped service. This is not LSB compliant and can generate difficulties in cluster environments. This update makes stopping LSB compliant. (BZ#521926)

- Squid is not currently built to support MAC address filtering in ACLs. This update includes support for MAC address filtering. (BZ#496170)

- Squid is not currently built to support Kerberos negotiate authentication. This update enables Kerberos authentication. (BZ#516245)

- Squid does not include the port number as part of URIs it constructs when configured as an accelerator. This results in a 403 error. This update corrects this behavior. (BZ#538738)

- the error_map feature does not work if the same handling is set also on the HTTP server that operates in deflate mode. This update fixes this issue. (BZ#470843)

After installing this update, the squid service will be restarted automatically.

Solution

Update the affected squid package.

See Also

https://bugzilla.redhat.com/show_bug.cgi?id=470843

https://bugzilla.redhat.com/show_bug.cgi?id=496170

https://bugzilla.redhat.com/show_bug.cgi?id=516245

https://bugzilla.redhat.com/show_bug.cgi?id=521926

https://bugzilla.redhat.com/show_bug.cgi?id=538738

http://www.nessus.org/u?7f6169b0

Plugin Details

Severity: Medium

ID: 60775

File Name: sl_20100330_squid_on_SL5_x.nasl

Version: 1.6

Type: local

Agent: unix

Published: 2012/08/01

Updated: 2021/01/14

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 4.4

CVSS v2.0

Base Score: 5

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

Vulnerability Information

CPE: x-cpe:/o:fermilab:scientific_linux

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 2010/03/30

Reference Information

CVE: CVE-2009-2855, CVE-2010-0308

CWE: 20