Red Hat Product Errata RHSA-2004:462 - Security Advisory
Issued:
2004-09-30
Updated:
2004-09-30

RHSA-2004:462 - Security Advisory

Synopsis

squid security update

Type/Severity

Security Advisory: Moderate

Topic

An updated squid package that fixes a security vulnerability in the NTLM
authentication helper is now available.

Description

Squid is a full-featured Web proxy cache.

An out of bounds memory read bug was found within the NTLM authentication
helper routine. If Squid is configured to use the NTLM authentication
helper, a remote attacker could send a carefully crafted NTLM
authentication packet and cause Squid to crash. The Common Vulnerabilities
and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0832
to this issue.

Note: The NTLM authentication helper is not enabled by default in Red Hat
Enterprise Linux 3. Red Hat Enterprise Linux 2.1 is not vulnerable to this
issue as it shipped with a version of Squid which did not contain the
vulnerable helper.

Users of Squid should update to this erratum package, which contains a
backported patch and is not vulnerable to this issue.

Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied. Use Red Hat
Network to download and update your packages. To launch the Red Hat
Update Agent, use the following command:

up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

http://www.redhat.com/docs/manuals/enterprise/

Affected Products

  • Red Hat Enterprise Linux Server 3 x86_64
  • Red Hat Enterprise Linux Server 3 ia64
  • Red Hat Enterprise Linux Server 3 i386
  • Red Hat Enterprise Linux Workstation 3 x86_64
  • Red Hat Enterprise Linux Workstation 3 ia64
  • Red Hat Enterprise Linux Workstation 3 i386
  • Red Hat Enterprise Linux Desktop 3 x86_64
  • Red Hat Enterprise Linux Desktop 3 i386
  • Red Hat Enterprise Linux for IBM z Systems 3 s390x
  • Red Hat Enterprise Linux for IBM z Systems 3 s390
  • Red Hat Enterprise Linux for Power, big endian 3 ppc

Fixes

  • BZ - 131750 - CAN-2004-0832 Certain malformed NTLMSSP packets could crash the NTLM helpers provided by Squid

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.