5224388 2000-06-24 01:23 /133 rader/ Postmaster
Mottagare: Red Hat Announce (import) <1518>
Ärende: [RHSA-2000:039-02] remote root exploit (SITE EXEC) fixed
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Red Hat, Inc. Security Advisory
Synopsis: remote root exploit (SITE EXEC) fixed
Advisory ID: RHSA-2000:039-02
Issue date: 2000-06-23
Updated on: 2000-06-23
Product: Red Hat Linux
Keywords: wu-ftpd, root exploit, site exec, buffer overrun
Cross references: N/A
---------------------------------------------------------------------
1. Topic:
A security bug in wu-ftpd can permit remote users, even without
an account, to gain root access.
The new version closes the hole.
2. Relevant releases/architectures:
Red Hat Linux 5.2 - i386 alpha sparc
Red Hat Linux 6.2 - i386 alpha sparc
3. Problem description:
An exploitable buffer overrun existed in wu-ftpd code's status update
code. Fixed by adding bounds checking by passing the status strings
through %s.
4. Solution:
For each RPM for your particular architecture, run:
rpm -Fvh [filename]
where filename is the name of the RPM.
5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info):
N/A
6. RPMs required:
Red Hat Linux 5.2:
i386:
ftp://updates.redhat.com/5.2/i386/wu-ftpd-2.6.0-2.5.x.i386.rpm
alpha:
ftp://updates.redhat.com/5.2/alpha/wu-ftpd-2.6.0-2.5.x.alpha.rpm
sparc:
ftp://updates.redhat.com/5.2/sparc/wu-ftpd-2.6.0-2.5.x.sparc.rpm
sources:
ftp://updates.redhat.com/5.2/SRPMS/wu-ftpd-2.6.0-2.5.x.src.rpm
Red Hat Linux 6.2:
i386:
ftp://updates.redhat.com/6.2/i386/wu-ftpd-2.6.0-14.6x.i386.rpm
alpha:
ftp://updates.redhat.com/6.2/alpha/wu-ftpd-2.6.0-14.6x.alpha.rpm
sparc:
ftp://updates.redhat.com/6.2/sparc/wu-ftpd-2.6.0-14.6x.sparc.rpm
sources:
ftp://updates.redhat.com/6.2/SRPMS/wu-ftpd-2.6.0-14.6x.src.rpm
7. Verification:
MD5 sum Package Name
--------------------------------------------------------------------------
e1f3b09d8ad0067fa7fd22e7afe77e64 5.2/SRPMS/wu-ftpd-2.6.0-2.5.x.src.rpm
7c2f89b3f8533ec54a36c5dde5995ce6 5.2/alpha/wu-ftpd-2.6.0-2.5.x.alpha.rpm
8dbd0b0f1fa1d0755393942cb4cb141d 5.2/i386/wu-ftpd-2.6.0-2.5.x.i386.rpm
5d9df2512a15e5c8914f398d980b12e7 5.2/sparc/wu-ftpd-2.6.0-2.5.x.sparc.rpm
67349a75b767585628912b840e52806e 6.2/SRPMS/wu-ftpd-2.6.0-14.6x.src.rpm
fafe870fc91762dd7e9182df3b4dfee5 6.2/alpha/wu-ftpd-2.6.0-14.6x.alpha.rpm
50c11f333641277ab75e6207bffb13b4 6.2/i386/wu-ftpd-2.6.0-14.6x.i386.rpm
8abba6ffa660d1c221581855630ed40d 6.2/sparc/wu-ftpd-2.6.0-14.6x.sparc.rpm
These packages are GPG signed by Red Hat, Inc. for security. Our key
is available at:
http://www.redhat.com/corp/contact.html
You can verify each package with the following command:
rpm --checksig <filename>
If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
rpm --checksig --nogpg <filename>
8. References:
N/A
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5225383 2000-06-24 21:07 /28 rader/ Postmaster
Mottagare: Bugtraq (import) <11422>
Ärende: Re: [RHSA-2000:039-02] remote root exploit (SITE EXEC) fixed
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Message-ID: <083301bfddad$003642e0$0273b6d4@freebsd.lublin.pl>
Date: Sat, 24 Jun 2000 09:22:48 +0200
Reply-To: Przemyslaw Frasunek <venglin@FREEBSD.LUBLIN.PL>
Sender: Bugtraq List <BUGTRAQ@SECURITYFOCUS.COM>
From: Przemyslaw Frasunek <venglin@FREEBSD.LUBLIN.PL>
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To: BUGTRAQ@SECURITYFOCUS.COM
> 3. Problem description:
> An exploitable buffer overrun existed in wu-ftpd code's status update code.
> Fixed by adding bounds checking by passing the status strings through %s.
Yet another clueless advisory. I say it loudly: THIS IS NOT BUFFER
OVERFLOW ATTACK. All applications that doesn't use format strings
properly are vulnerable to <retloc>%.f%.f%.f %.<ret>d%n attack.
-- * Fido: 2:480/124 ** WWW: http://www.freebsd.lublin.pl ** NIC-HDL:
PMF9-RIPE * * Inet: venglin@freebsd.lublin.pl ** PGP:
D48684904685DF43 EA93AFA13BE170BF *
(5225383) ------------------------------------------(Ombruten)