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TurboLinux Security Announcement: Package: dump-0.4b11-1 and earlier

Mar 15, 2000, 20:49 (1 Talkback[s])
(Other stories by Katie Moussouris)

Date: Wed, 15 Mar 2000 12:09:33 -0800 (PST)
From: Katie Moussouris k8e@mail.turbolinux.com
To: tl-security-announce@turbolinux.com
Subject: [TL-Security-Announce] dump-0.4b11-1 and earlier TLSA200007-1

TurboLinux Security Announcement

Package: dump-0.4b11-1 and earlier
Date: Wed Mar 15 12:03:18 PST 2000

Affected TurboLinux versions: 6.0.2 and earlier
Vulnerability Type: local buffer overrun
TurboLinux Advisory ID#: TLSA200007-1
BugTraq ID#: 1020
Credits: This vulnerability was posted to the Bugtraq mailing list by
KimYongJun s96192@ce.hannam.ac.kr on February 28, 2000.


A security hole was discovered in the package mentioned above. Please update the package in your installation as soon as possible or disable the service.
1. Problem Summary

The dump utility is setuid and setgid root. Previous versions of dump did not correctly drop the effective gid settings. When passed an oversized argument to the "-f a" parameters, it will overrun the stack. If this argument is crafted properly, it may be possible to replace the instruction pointer or return address on the stack and execute arbitrary code with the permissions of the process (gid of root).

2. Impact

An attacker could use this overrun to execute code with the gid of root, leading to further system compromise.

3. Solution

Update the package from our ftp server by running the following command:

rpm -Fv ftp_path_to_filename

Where ftp_path_to_filename is the following:

ftp://ftp.turbolinux.com/pub/updates/6.0/security/dump-0.4b16-1.i386.rpm

The source rpm can be downloaded here:

ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/dump-0.4b16-1.src.rpm

**Note: You must rebuild and install the rpm if you choose to download and install the srpm. Simply installing the srpm alone WILL NOT CLOSE THE SECURITY HOLE.

Please verify the md5 checksum of the update before you install:

  MD5 sum                               Package Name

0a3777c176c1580fe44f03acfdc70f59 dump-0.4b16-1.i386.rpm
64f95b579e6a813f2f207f1817d8c5e8 dump-0.4b16-1.src.rpm

You can find more updates on our ftp server:

ftp://ftp.turbolinux.com/pub/updates/6.0/security/ for TL6.0 Workstation and Server security updates
ftp://ftp.turbolinux.com/pub/updates/4.0/security/ for TL4.0 Workstation and Server security updates

Our webpage for security announcements:

http://www.turbolinux.com/security

If you want to report vulnerabilities, please contact: rt-security@turbolinux.com


Subscribe to the TurboLinux Security Mailing lists:
TL-security - A moderated list for discussing security issues in TurboLinux products. Subscribe at http://www.turbolinux.com/mailman/listinfo/tl-security

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http://www.turbolinux.com/mailman/listinfo/tl-security-announce