(Red Hat Issues Fix) vsftpd Memory Leak When Invalid Authentication Attempts Occur Lets Remote Authenticated Users Deny Service
|
|
SecurityTracker Alert ID: 1020547
|
|
SecurityTracker URL: http://securitytracker.com/id?1020547
|
|
CVE Reference: CVE-2008-2375
(Links to External Site)
|
Date: Jul 24 2008
|
Impact: Denial of service via network
|
Fix Available: Yes
Vendor Confirmed: Yes
|
Advisory: Red Hat Advisory
|
Description: A vulnerability was reported in vsftpd on Red Hat. A remote user can cause denial of service conditions.
A remote user can generate an invalid authentication attempt to trigger a memory leak. This can be repeated to consume excessive
memory on the target system.
Only the version shipped with Red Hat Enterprise Linux is affected.
The system is only affected
when vsftpd is used with Pluggable Authentication Modules (PAM).
|
Impact: A remote user can consume excessive memory on the target system.
|
Solution: Red Hat has released a fix.
The Red Hat advisory is available at:
https://rhn.redhat.com/errata/RHSA-2008-0579.html
|
Vendor URL: vsftpd.beasts.org/ (Links to External Site)
|
Cause: Resource error
|
Underlying OS: Linux (Red Hat Enterprise)
|
Underlying OS Comments: 3; Only RHEL is affected
|
Reported By: bugzilla@redhat.com
|
Message History:
This archive entry is a follow-up to the message listed below.
|
Source Message Contents
|
Date: Thu, 24 Jul 2008 13:30:14 -0400
From: bugzilla@redhat.com
Subject: [RHSA-2008:0579-01] Moderate: vsftpd security update
|
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
=====================================================================
Red Hat Security Advisory
Synopsis: Moderate: vsftpd security update
Advisory ID: RHSA-2008:0579-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0579.html
Issue date: 2008-07-24
CVE Names: CVE-2008-2375
=====================================================================
1. Summary:
An updated vsftpd package that fixes a security issue is now available.
This update has been rated as having moderate security impact by the Red
Hat Security Response Team.
2. Relevant releases/architectures:
Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64
3. Description:
vsftpd (Very Secure File Transfer Protocol (FTP) daemon) is a secure FTP
server for Linux and Unix-like systems.
The version of vsftpd as shipped in Red Hat Enterprise Linux 3 when used in
combination with Pluggable Authentication Modules (PAM) had a memory leak
on an invalid authentication attempt. Since vsftpd prior to version 2.0.5
allows any number of invalid attempts on the same connection this memory
leak could lead to an eventual DoS. (CVE-2008-2375)
This update mitigates this security issue by including a backported patch
which terminates a session after a given number of failed log in attempts.
The default number of attempts is 3 and this can be configured using the
"max_login_fails" directive.
All vsftpd users should upgrade to this updated package, which addresses
this vulnerability.
4. Solution:
Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.
This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188
5. Bugs fixed (http://bugzilla.redhat.com/):
453376 - CVE-2008-2375 older vsftpd authentication memory leak
6. Package List:
Red Hat Enterprise Linux AS version 3:
Source:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/vsftpd-1.2.1-3E.16.src.rpm
i386:
vsftpd-1.2.1-3E.16.i386.rpm
vsftpd-debuginfo-1.2.1-3E.16.i386.rpm
ia64:
vsftpd-1.2.1-3E.16.ia64.rpm
vsftpd-debuginfo-1.2.1-3E.16.ia64.rpm
ppc:
vsftpd-1.2.1-3E.16.ppc.rpm
vsftpd-debuginfo-1.2.1-3E.16.ppc.rpm
s390:
vsftpd-1.2.1-3E.16.s390.rpm
vsftpd-debuginfo-1.2.1-3E.16.s390.rpm
s390x:
vsftpd-1.2.1-3E.16.s390x.rpm
vsftpd-debuginfo-1.2.1-3E.16.s390x.rpm
x86_64:
vsftpd-1.2.1-3E.16.x86_64.rpm
vsftpd-debuginfo-1.2.1-3E.16.x86_64.rpm
Red Hat Enterprise Linux ES version 3:
Source:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/vsftpd-1.2.1-3E.16.src.rpm
i386:
vsftpd-1.2.1-3E.16.i386.rpm
vsftpd-debuginfo-1.2.1-3E.16.i386.rpm
ia64:
vsftpd-1.2.1-3E.16.ia64.rpm
vsftpd-debuginfo-1.2.1-3E.16.ia64.rpm
x86_64:
vsftpd-1.2.1-3E.16.x86_64.rpm
vsftpd-debuginfo-1.2.1-3E.16.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/#package
7. References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2375
http://www.redhat.com/security/updates/classification/#moderate
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://www.redhat.com/security/team/contact/
Copyright 2008 Red Hat, Inc.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.4 (GNU/Linux)
iD8DBQFIiLwkXlSAg2UNWIIRAr3TAJ4kxkzI7NNKqvt9xb2F8abuHApjFwCgoNRa
5I+/SXj/isJ10sHdOS8kl2M=
=fnwt
-----END PGP SIGNATURE-----
--
RHSA-announce mailing list
RHSA-announce@redhat.com
https://www.redhat.com/mailman/listinfo/rhsa-announce
|
|
