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Security Advisory squid security update

Advisory: RHSA-2005:061-19
Type: Security Advisory
Severity: Important
Issued on: 2005-02-11
Last updated on: 2005-02-11
Affected Products: Red Hat Desktop (v. 3)
Red Hat Enterprise Linux AS (v. 2.1)
Red Hat Enterprise Linux AS (v. 3)
Red Hat Enterprise Linux ES (v. 2.1)
Red Hat Enterprise Linux ES (v. 3)
Red Hat Enterprise Linux WS (v. 3)
Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor
CVEs (cve.mitre.org): CVE-2005-0094
CVE-2005-0095
CVE-2005-0096
CVE-2005-0097
CVE-2005-0173
CVE-2005-0174
CVE-2005-0175
CVE-2005-0211
CVE-2005-0241

Details

An updated Squid package that fixes several security issues is now available.

Squid is a full-featured Web proxy cache.

A buffer overflow flaw was found in the Gopher relay parser. This bug
could allow a remote Gopher server to crash the Squid proxy that reads data
from it. Although Gopher servers are now quite rare, a malicious web page
(for example) could redirect or contain a frame pointing to an attacker's
malicious gopher server. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CAN-2005-0094 to this issue.

An integer overflow flaw was found in the WCCP message parser. It is
possible to crash the Squid server if an attacker is able to send a
malformed WCCP message with a spoofed source address matching Squid's
"home router". The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CAN-2005-0095 to this issue.

A memory leak was found in the NTLM fakeauth_auth helper. It is possible
that an attacker could place the Squid server under high load, causing the
NTML fakeauth_auth helper to consume a large amount of memory, resulting in
a denial of service. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CAN-2005-0096 to this issue.

A NULL pointer de-reference bug was found in the NTLM fakeauth_auth helper.
It is possible for an attacker to send a malformed NTLM type 3 message,
causing the Squid server to crash. The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the name CAN-2005-0097 to
this issue.

A username validation bug was found in squid_ldap_auth. It is possible for
a username to be padded with spaces, which could allow a user to bypass
explicit access control rules or confuse accounting. The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name
CAN-2005-0173 to this issue.

The way Squid handles HTTP responses was found to need strengthening. It is
possible that a malicious web server could send a series of HTTP responses
in such a way that the Squid cache could be poisoned, presenting users with
incorrect webpages. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the names CAN-2005-0174 and CAN-2005-0175 to
these issues.

A bug was found in the way Squid handled oversized HTTP response headers.
It is possible that a malicious web server could send a specially crafted
HTTP header which could cause the Squid cache to be poisoned, presenting
users with incorrect webpages. The Common Vulnerabilities and Exposures
project (cve.mitre.org) has assigned the name CAN-2005-0241 to this issue.

A buffer overflow bug was found in the WCCP message parser. It is possible
that an attacker could send a malformed WCCP message which could crash the
Squid server or execute arbitrary code. The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the name CAN-2005-0211
to this issue.

Users of Squid should upgrade to this updated package, which contains
backported patches, and is not vulnerable to 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. 3)

IA-32:
squid-2.5.STABLE3-6.3E.7.i386.rpm
File outdated by:  RHSA-2008:0214
    MD5: 3da9a078535a549a941c35dd4efcb07e
 
x86_64:
squid-2.5.STABLE3-6.3E.7.x86_64.rpm
File outdated by:  RHSA-2008:0214
    MD5: cd4a5c1528339547803f7784a494ef61
 
Red Hat Enterprise Linux AS (v. 2.1)

IA-32:
squid-2.4.STABLE7-1.21as.4.i386.rpm
File outdated by:  RHSA-2008:0214
    MD5: a950517eec9d75e9f9255c22098cb942
 
IA-64:
squid-2.4.STABLE7-1.21as.4.ia64.rpm
File outdated by:  RHSA-2008:0214
    MD5: 223ad64e00405758e505b1412a83ca65
 
Red Hat Enterprise Linux AS (v. 3)

IA-32:
squid-2.5.STABLE3-6.3E.7.i386.rpm
File outdated by:  RHSA-2008:0214
    MD5: 3da9a078535a549a941c35dd4efcb07e
 
IA-64:
squid-2.5.STABLE3-6.3E.7.ia64.rpm
File outdated by:  RHSA-2008:0214
    MD5: 44ba7d01ebfde6643bbca67ed612f71e
 
PPC:
squid-2.5.STABLE3-6.3E.7.ppc.rpm
File outdated by:  RHSA-2008:0214
    MD5: eeabefd918d66aed11cfc1b28403b141
 
s390:
squid-2.5.STABLE3-6.3E.7.s390.rpm
File outdated by:  RHSA-2008:0214
    MD5: 7a2b9540c7b55ee44984f796e39d806d
 
s390x:
squid-2.5.STABLE3-6.3E.7.s390x.rpm
File outdated by:  RHSA-2008:0214
    MD5: 372366d5fbaa404527a43e9de8f46cdd
 
x86_64:
squid-2.5.STABLE3-6.3E.7.x86_64.rpm
File outdated by:  RHSA-2008:0214
    MD5: cd4a5c1528339547803f7784a494ef61
 
Red Hat Enterprise Linux ES (v. 2.1)

IA-32:
squid-2.4.STABLE7-1.21as.4.i386.rpm
File outdated by:  RHSA-2008:0214
    MD5: a950517eec9d75e9f9255c22098cb942
 
Red Hat Enterprise Linux ES (v. 3)

IA-32:
squid-2.5.STABLE3-6.3E.7.i386.rpm
File outdated by:  RHSA-2008:0214
    MD5: 3da9a078535a549a941c35dd4efcb07e
 
IA-64:
squid-2.5.STABLE3-6.3E.7.ia64.rpm
File outdated by:  RHSA-2008:0214
    MD5: 44ba7d01ebfde6643bbca67ed612f71e
 
x86_64:
squid-2.5.STABLE3-6.3E.7.x86_64.rpm
File outdated by:  RHSA-2008:0214
    MD5: cd4a5c1528339547803f7784a494ef61
 
Red Hat Enterprise Linux WS (v. 3)

IA-32:
squid-2.5.STABLE3-6.3E.7.i386.rpm
File outdated by:  RHSA-2008:0214
    MD5: 3da9a078535a549a941c35dd4efcb07e
 
IA-64:
squid-2.5.STABLE3-6.3E.7.ia64.rpm
File outdated by:  RHSA-2008:0214
    MD5: 44ba7d01ebfde6643bbca67ed612f71e
 
x86_64:
squid-2.5.STABLE3-6.3E.7.x86_64.rpm
File outdated by:  RHSA-2008:0214
    MD5: cd4a5c1528339547803f7784a494ef61
 
Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor

IA-64:
squid-2.4.STABLE7-1.21as.4.ia64.rpm
File outdated by:  RHSA-2008:0214
    MD5: 223ad64e00405758e505b1412a83ca65
 

Bugs fixed (see bugzilla for more information)

145540 - CAN-2005-0094 Multiple issues with squid (CAN-2005-0095 CAN-2005-0096 CAN-2005-0097)
146159 - CAN-2005-0173 Multiple squid issues (CAN-2005-0174 CAN-2005-0175)
146780 - CAN-2005-0241 Correct handling of oversized reply headers


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/