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TurboLinux Security Announcement: Package: pam-0.70-2 and earlier; usermode-1.6-1 and earlierApr 14, 2000, 19:55 (0 Talkback[s])
(Other stories by Katie Moussouris)
Date: Fri, 14 Apr 2000 11:47:23 -0700 (PDT)
TurboLinux Security Announcement
Package: pam-0.70-2 and earlier; usermode-1.6-1 and earlier
Affected TurboLinux versions: 6.0.2 and earlier
A security hole was discovered in the packages mentioned above. Please update the packages in your installation as soon as possible or disable the service.
1. Problem Summary
Nobody says it like Dildog: "Both 'pam' and 'userhelper' (a setuid binary that comes with the 'usermode-1.15' rpm) follow .. paths. Since pam_start calls down to _pam_add_handler(), we can get it to dlopen any file on disk. 'userhelper' being setuid means we can get root."
A local user can use this vulnerability to get root.
Update the packages from our ftp server by running the following command:
rpm -Fvh ftp_path_to_filename
Where ftp_path_to_filename is the following:
Run the above command again, where ftp_path_to_filename is:
The source rpms can be downloaded here:
**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
91828f6e10423ae7ccae8496b418ad9a pam-0.72-3.i386.rpm 5f24ee48a6f3c6c4760150a1b00b98e9 usermode-1.18-1.i386.rpm 9d6fc46f0b3ce68c8398e152d20e142d pam-0.72-3.src.rpm 85f7906172a00718f0bf30cb76fee945 usermode-1.18-1.src.rpm
These packages are GPG signed by Turbolinux for security. Our key is available here:
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:
for TL6.0 Workstation and Server security updates
Our webpage for security announcements:
If you want to report vulnerabilities, please contact:
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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