(Red Hat Issues Fix for RHEL) Squid NTLM Input Validation Error in ntlm_fetch_string() Lets Remote Users Crash the System
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SecurityTracker Alert ID: 1011473 |
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SecurityTracker URL: http://securitytracker.com/id/1011473
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CVE Reference:
CAN-2004-0832
(Links to External Site)
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Date: Sep 30 2004
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Impact:
Denial of service via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 2.5
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Description:
A vulnerability was reported in Squid in the processing of NTLM authentication strings. A remote user can cause denial of service conditions.
Marco Ortisi reported that Squid does not properly validate certain parameters to prevent negative values. If NTLM authentication is enabled, a remote user can send certain malformed NTLMSSP packets to cause the target service to crash.
The flaw resides in ntlmGetString() in 'squid/squid/helpers/ntlm_auth/fakeauth/fakeauth_auth.c' and in ntlm_fetch_string() in 'squid/squid/lib/ntlmauth.c'.
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Impact:
A remote user can cause the target service to crash.
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Solution:
Red Hat has released a fix.
Red Hat Enterprise Linux AS version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/squid-2.5.STABLE3-6.3E.1.src.rpm
319a574d8ab2d7e1bfa454055f3f1933 squid-2.5.STABLE3-6.3E.1.src.rpm
i386:
3b46288783aacdd9842d43f221201c44 squid-2.5.STABLE3-6.3E.1.i386.rpm
ia64:
e92e66c250e34497a397c53c33ae1c2b squid-2.5.STABLE3-6.3E.1.ia64.rpm
ppc:
726578556b36bb263526841add7dd9a2 squid-2.5.STABLE3-6.3E.1.ppc.rpm
s390:
ce1c585636cfe7843f9188f283533800 squid-2.5.STABLE3-6.3E.1.s390.rpm
s390x:
cd974ecba26d90d98a145e9813221dfb squid-2.5.STABLE3-6.3E.1.s390x.rpm
x86_64:
0c63d4747a0e6848cd69259b6e7648dd squid-2.5.STABLE3-6.3E.1.x86_64.rpm
Red Hat Desktop version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/squid-2.5.STABLE3-6.3E.1.src.rpm
319a574d8ab2d7e1bfa454055f3f1933 squid-2.5.STABLE3-6.3E.1.src.rpm
i386:
3b46288783aacdd9842d43f221201c44 squid-2.5.STABLE3-6.3E.1.i386.rpm
x86_64:
0c63d4747a0e6848cd69259b6e7648dd squid-2.5.STABLE3-6.3E.1.x86_64.rpm
Red Hat Enterprise Linux ES version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/squid-2.5.STABLE3-6.3E.1.src.rpm
319a574d8ab2d7e1bfa454055f3f1933 squid-2.5.STABLE3-6.3E.1.src.rpm
i386:
3b46288783aacdd9842d43f221201c44 squid-2.5.STABLE3-6.3E.1.i386.rpm
ia64:
e92e66c250e34497a397c53c33ae1c2b squid-2.5.STABLE3-6.3E.1.ia64.rpm
x86_64:
0c63d4747a0e6848cd69259b6e7648dd squid-2.5.STABLE3-6.3E.1.x86_64.rpm
Red Hat Enterprise Linux WS version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/squid-2.5.STABLE3-6.3E.1.src.rpm
319a574d8ab2d7e1bfa454055f3f1933 squid-2.5.STABLE3-6.3E.1.src.rpm
i386:
3b46288783aacdd9842d43f221201c44 squid-2.5.STABLE3-6.3E.1.i386.rpm
ia64:
e92e66c250e34497a397c53c33ae1c2b squid-2.5.STABLE3-6.3E.1.ia64.rpm
x86_64:
0c63d4747a0e6848cd69259b6e7648dd squid-2.5.STABLE3-6.3E.1.x86_64.rpm
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Vendor URL: www.squid-cache.org/bugs/show_bug.cgi?id=1045 (Links to External Site)
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Cause:
Boundary error, Input validation error
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Underlying OS:
Linux (Red Hat Enterprise)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Thu, 30 Sep 2004 10:54 -0400
Subject: [RHSA-2004:462-01] Updated squid package fixes security
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
- ---------------------------------------------------------------------
Red Hat Security Advisory
Synopsis: Updated squid package fixes security vulnerability
Advisory ID: RHSA-2004:462-01
Issue date: 2004-09-30
Updated on: 2004-09-30
Product: Red Hat Enterprise Linux
CVE Names: CAN-2004-0832
- ---------------------------------------------------------------------
1. Summary:
An updated squid package that fixes a security vulnerability in the NTLM
authentication helper is now available.
2. Relevant releases/architectures:
Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Desktop version 3 - i386, x86_64
Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64
3. Problem 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.
4. 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/
5. Bug IDs fixed (http://bugzilla.redhat.com/ for more info):
131750 - CAN-2004-0832 Certain malformed NTLMSSP packets could crash the NTLM helpers provided by Squid
6. RPMs required:
Red Hat Enterprise Linux AS version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/squid-2.5.STABLE3-6.3E.1.src.rpm
319a574d8ab2d7e1bfa454055f3f1933 squid-2.5.STABLE3-6.3E.1.src.rpm
i386:
3b46288783aacdd9842d43f221201c44 squid-2.5.STABLE3-6.3E.1.i386.rpm
ia64:
e92e66c250e34497a397c53c33ae1c2b squid-2.5.STABLE3-6.3E.1.ia64.rpm
ppc:
726578556b36bb263526841add7dd9a2 squid-2.5.STABLE3-6.3E.1.ppc.rpm
s390:
ce1c585636cfe7843f9188f283533800 squid-2.5.STABLE3-6.3E.1.s390.rpm
s390x:
cd974ecba26d90d98a145e9813221dfb squid-2.5.STABLE3-6.3E.1.s390x.rpm
x86_64:
0c63d4747a0e6848cd69259b6e7648dd squid-2.5.STABLE3-6.3E.1.x86_64.rpm
Red Hat Desktop version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/squid-2.5.STABLE3-6.3E.1.src.rpm
319a574d8ab2d7e1bfa454055f3f1933 squid-2.5.STABLE3-6.3E.1.src.rpm
i386:
3b46288783aacdd9842d43f221201c44 squid-2.5.STABLE3-6.3E.1.i386.rpm
x86_64:
0c63d4747a0e6848cd69259b6e7648dd squid-2.5.STABLE3-6.3E.1.x86_64.rpm
Red Hat Enterprise Linux ES version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/squid-2.5.STABLE3-6.3E.1.src.rpm
319a574d8ab2d7e1bfa454055f3f1933 squid-2.5.STABLE3-6.3E.1.src.rpm
i386:
3b46288783aacdd9842d43f221201c44 squid-2.5.STABLE3-6.3E.1.i386.rpm
ia64:
e92e66c250e34497a397c53c33ae1c2b squid-2.5.STABLE3-6.3E.1.ia64.rpm
x86_64:
0c63d4747a0e6848cd69259b6e7648dd squid-2.5.STABLE3-6.3E.1.x86_64.rpm
Red Hat Enterprise Linux WS version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/squid-2.5.STABLE3-6.3E.1.src.rpm
319a574d8ab2d7e1bfa454055f3f1933 squid-2.5.STABLE3-6.3E.1.src.rpm
i386:
3b46288783aacdd9842d43f221201c44 squid-2.5.STABLE3-6.3E.1.i386.rpm
ia64:
e92e66c250e34497a397c53c33ae1c2b squid-2.5.STABLE3-6.3E.1.ia64.rpm
x86_64:
0c63d4747a0e6848cd69259b6e7648dd squid-2.5.STABLE3-6.3E.1.x86_64.rpm
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.html#package
7. References:
http://www.squid-cache.org/bugs/show_bug.cgi?id=1045
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0832
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://www.redhat.com/security/team/contact.html
Copyright 2004 Red Hat, Inc.
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