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TurboLinux Security Announcement: Package: perl-5.00503 and earlier

Aug 10, 2000, 01:12 (1 Talkback[s])
(Other stories by Joe Little)

Date: Wed, 9 Aug 2000 17:39:10 -0700 (PDT)
From: Joe Little
To: tl-security-announce@turbolinux.com
Subject: [TL-Security-Announce] perl TLSA2000018-1

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                        TurboLinux Security Announcement

        Package: perl-5.00503 and earlier
        Date: Wednesday August 9 17:00 PDT 2000

        Affected TurboLinux versions: 6.0.5 and earlier (including 4.x)
        Vulnerability Type: Local root exploit
        TurboLinux Advisory ID#:  TLSA2000018-1
        Credits: Michal Zalewski, Simon Cozens

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

A component of perl, sperl, runs suid root to enable execution of perl code by a file's owner. When sperl is used in an improper manner, it will alert the root user via /bin/mail that illegal use of sperl has been attempted. A widely available exploit utilizes this behavior to gain privileged access.

2. Impact

The latest versions of perl as well as past shipping versions of perl in TurboLinux distributions are susceptible to a local root exploit.

3. Solution

Please upgrade your packages to match the new revision

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

rpm -Fv ftp_path_to_filename

Where ftp_path_to_filename is the following for 4.x or 6.x versions:

ftp://ftp.turbolinux.com/pub/updates/4.0/security/perl-5.00503-7.i386.rpm
ftp://ftp.turbolinux.com/pub/updates/6.0/security/perl-5.005_02-8TL.i386.rpm

The source RPM can be downloaded here:

ftp://ftp.turbolinux.com/pub/updates/4.0/SRPMS/perl-5.005_02-8TL.src.rpm
ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/perl-5.00503-7.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

dd1d17422817d40be46d730f1ce8d41e perl-5.00503-7.i386.rpm
659d162acaedb37c364b45e8666dbd2b perl-5.00503-7.src.rpm
2951099587eabb3de107ee147619a34b perl-5.005_02-8TL.i386.rpm
13a590ae17f2c445c5240d395c0bec5a perl-5.005_02-8TL.src.rpm

These packages are GPG signed by Turbolinux for security. Our key is available here:

http://www.turbolinux.com/security/tlgpgkey.asc

To verify a package, use the following command:

rpm --checksig name_of_rpm

To examine only the md5sum, use the following command:

rpm --checksig --nogpg name_of_rpm

**Note: Checking GPG keys requires RPM 3.0 or higher.


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

TL-security-announce - An announce-only mailing list for security updates and alerts.
Subscribe at
http://www.turbolinux.com/mailman/listinfo/tl-security-announce

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