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Security Advisory squid security update

Advisory: RHSA-2006:0052-7
Type: Security Advisory
Severity: Moderate
Issued on: 2006-03-07
Last updated on: 2006-03-07
Affected Products: Red Hat Desktop (v. 4)
Red Hat Enterprise Linux AS (v. 4)
Red Hat Enterprise Linux ES (v. 4)
Red Hat Enterprise Linux WS (v. 4)
CVEs (cve.mitre.org): CVE-2005-2917

Details

An updated squid package that fixes a security vulnerability as well as
several issues is now available.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

Squid is a high-performance proxy caching server for Web clients,
supporting FTP, gopher, and HTTP data objects.

A denial of service flaw was found in the way squid processes certain NTLM
authentication requests. It is possible for a remote attacker to crash the
Squid server by sending a specially crafted NTLM authentication request.
The Common Vulnerabilities and Exposures project (cve.mitre.org) assigned
the name CVE-2005-2917 to this issue.

The following issues have also been fixed in this update:

* An error introduced in squid-2.5.STABLE6-3.4E.12 can crash Squid when a
user visits a site that has a bit longer DNS record.

* An error introduced in the old package prevented Squid from returning
correct information about large file systems. The new package is compiled
with the IDENT lookup support so that users who want to use it do not
have to recompile it.

* Some authentication helpers needed SETUID rights but did not have them.
If administrators wanted to use cache administrator, they had to change
the SETUID bit manually. The updated package sets this bit so the new
package can be updated without manual intervention from administrators.

* Squid could not handle a reply from an HTTP server when the reply began
with the new-line character.

* An issue was discovered when a reply from an HTTP server was not
HTTP 1.0 or 1.1 compliant.

* The updated package keeps user-defined error pages when the package
is updated and it adds new ones.

All users of squid should upgrade to this updated package, which resolves
these issues.


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/

Updated packages

Red Hat Desktop (v. 4)

SRPMS:
squid-2.5.STABLE6-3.4E.12.src.rpm
File outdated by:  RHBA-2008:0230
    MD5: 9fe34dfe64e9ee9c41e3bc7d1045a322
 
IA-32:
squid-2.5.STABLE6-3.4E.12.i386.rpm
File outdated by:  RHBA-2008:0230
    MD5: 6723c05cd3f3e4820202ccb7ef36d87f
 
x86_64:
squid-2.5.STABLE6-3.4E.12.x86_64.rpm
File outdated by:  RHBA-2008:0230
    MD5: b830bea5e588962f2d47fe20870c99ef
 
Red Hat Enterprise Linux AS (v. 4)

SRPMS:
squid-2.5.STABLE6-3.4E.12.src.rpm
File outdated by:  RHBA-2008:0230
    MD5: 9fe34dfe64e9ee9c41e3bc7d1045a322
 
IA-32:
squid-2.5.STABLE6-3.4E.12.i386.rpm
File outdated by:  RHBA-2008:0230
    MD5: 6723c05cd3f3e4820202ccb7ef36d87f
 
IA-64:
squid-2.5.STABLE6-3.4E.12.ia64.rpm
File outdated by:  RHBA-2008:0230
    MD5: e94cb0ab3f6cb32211daaa7fcc990d60
 
PPC:
squid-2.5.STABLE6-3.4E.12.ppc.rpm
File outdated by:  RHBA-2008:0230
    MD5: 0fbfee738f1c6fb25b35f2f5ed5dda91
 
s390:
squid-2.5.STABLE6-3.4E.12.s390.rpm
File outdated by:  RHBA-2008:0230
    MD5: 558e14fde06db116b71eefbe260acbd4
 
s390x:
squid-2.5.STABLE6-3.4E.12.s390x.rpm
File outdated by:  RHBA-2008:0230
    MD5: 178d3cc52c236dece99bbb487e741f6a
 
x86_64:
squid-2.5.STABLE6-3.4E.12.x86_64.rpm
File outdated by:  RHBA-2008:0230
    MD5: b830bea5e588962f2d47fe20870c99ef
 
Red Hat Enterprise Linux ES (v. 4)

SRPMS:
squid-2.5.STABLE6-3.4E.12.src.rpm
File outdated by:  RHBA-2008:0230
    MD5: 9fe34dfe64e9ee9c41e3bc7d1045a322
 
IA-32:
squid-2.5.STABLE6-3.4E.12.i386.rpm
File outdated by:  RHBA-2008:0230
    MD5: 6723c05cd3f3e4820202ccb7ef36d87f
 
IA-64:
squid-2.5.STABLE6-3.4E.12.ia64.rpm
File outdated by:  RHBA-2008:0230
    MD5: e94cb0ab3f6cb32211daaa7fcc990d60
 
x86_64:
squid-2.5.STABLE6-3.4E.12.x86_64.rpm
File outdated by:  RHBA-2008:0230
    MD5: b830bea5e588962f2d47fe20870c99ef
 
Red Hat Enterprise Linux WS (v. 4)

SRPMS:
squid-2.5.STABLE6-3.4E.12.src.rpm
File outdated by:  RHBA-2008:0230
    MD5: 9fe34dfe64e9ee9c41e3bc7d1045a322
 
IA-32:
squid-2.5.STABLE6-3.4E.12.i386.rpm
File outdated by:  RHBA-2008:0230
    MD5: 6723c05cd3f3e4820202ccb7ef36d87f
 
IA-64:
squid-2.5.STABLE6-3.4E.12.ia64.rpm
File outdated by:  RHBA-2008:0230
    MD5: e94cb0ab3f6cb32211daaa7fcc990d60
 
x86_64:
squid-2.5.STABLE6-3.4E.12.x86_64.rpm
File outdated by:  RHBA-2008:0230
    MD5: b830bea5e588962f2d47fe20870c99ef
 
(The unlinked packages above are only available from the Red Hat Network)

Bugs fixed (see bugzilla for more information)

160704 - squid child processes exit with signal 6.. squid crashes
162660 - pam authentication fails
168378 - CVE-2005-2917 Squid malformed NTLM authentication DoS
170399 - Squid blocks page served by broken server
172375 - Error pages should not be replaced by updates
172392 - One translated Polish language error is missing preventing squid from startup
172697 - Squid doesn't handle headers split across packets


References



These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:
https://www.redhat.com/security/team/key/#package

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