Mandrake alert: at update

Posted by dave on Jan 18, 2002 4:54 PM EDT
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zen-parse discovered a problem in the at command containing an extra call to free() which can lead to a segfault with a carefully crafted, but incorrect, format. This is caused due to a heap corruption that can be exploited under certain circumstances because the at command is installed setuid root. Thanks to SuSE for an additional security improvement that ads the O_EXCL (exclusive) option to the open(2) system call inside the at code.

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Mandrake Linux Security Update Advisory ________________________________________________________________________

Package name: at Advisory ID: MDKSA-2002:007 Date: January 18th, 2002 Affected versions: 8.1 ________________________________________________________________________

Problem Description:

zen-parse discovered a problem in the at command containing an extra call to free() which can lead to a segfault with a carefully crafted, but incorrect, format. This is caused due to a heap corruption that can be exploited under certain circumstances because the at command is installed setuid root. Thanks to SuSE for an additional security improvement that ads the O_EXCL (exclusive) option to the open(2) system call inside the at code. ________________________________________________________________________

References:

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Updated Packages:

Mandrake Linux 8.1: 066814fda6dfc8f74721861a90c1d167 8.1/RPMS/at-3.1.8-4.1mdk.i586.rpm 8205596ce7b87d8dca57a6d9285dd1d1 8.1/SRPMS/at-3.1.8-4.1mdk.src.rpm

Mandrake Linux 8.1/ia64: bc46bc259124e1de45063503d8be2940 ia64/8.1/RPMS/at-3.1.8-4.1mdk.ia64.rpm 8205596ce7b87d8dca57a6d9285dd1d1 ia64/8.1/SRPMS/at-3.1.8-4.1mdk.src.rpm ________________________________________________________________________

Bug IDs fixed (see https://qa.mandrakesoft.com for more information):

________________________________________________________________________

To upgrade automatically, use MandrakeUpdate. The verification of md5 checksums and GPG signatures is performed automatically for you.

If you want to upgrade manually, download the updated package from one of our FTP server mirrors and upgrade with "rpm -Fvh *.rpm". A list of FTP mirrors can be obtained from:

http://www.mandrakesecure.net/en/ftp.php

Please verify the update prior to upgrading to ensure the integrity of the downloaded package. You can do this with the command:

rpm --checksig <filename>

All packages are signed by MandrakeSoft for security. You can obtain the GPG public key of the Mandrake Linux Security Team from:

https://www.mandrakesecure.net/RPM-GPG-KEYS

Please be aware that sometimes it takes the mirrors a few hours to update.

You can view other update advisories for Mandrake Linux at:

http://www.mandrakesecure.net/en/advisories/

MandrakeSoft has several security-related mailing list services that anyone can subscribe to. Information on these lists can be obtained by visiting:

http://www.mandrakesecure.net/en/mlist.php

If you want to report vulnerabilities, please contact

security@linux-mandrake.com ________________________________________________________________________

Type Bits/KeyID Date User ID pub 1024D/22458A98 2000-07-10 Linux Mandrake Security Team <security@linux-mandrake.com>

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