Mandrake alert: Updated gzip packages fix insecure temporary file creation
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A vulnerability exists in znew, a script included with gzip, that would create temporary files without taking precautions to avoid a symlink attack. Patches have been applied to make use of mktemp to generate unique filenames, and properly make use of noclobber in the script. Likewise, a fix for gzexe which had been applied previously was incomplete. It has been fixed to make full use of mktemp everywhere a temporary file is created.
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Hash: SHA1
________________________________________________________________________
Mandrake Linux Security Update Advisory
________________________________________________________________________
Package name: gzip
Advisory ID: MDKSA-2003:068
Date: June 16th, 2003
Affected versions: 8.2, 9.0, 9.1, Corporate Server 2.1,
Multi Network Firewall 8.2
________________________________________________________________________
Problem Description:
A vulnerability exists in znew, a script included with gzip, that
would create temporary files without taking precautions to avoid a
symlink attack. Patches have been applied to make use of mktemp to
generate unique filenames, and properly make use of noclobber in the
script. Likewise, a fix for gzexe which had been applied previously
was incomplete. It has been fixed to make full use of mktemp
everywhere a temporary file is created.
The znew problem was initially reported by Michal Zalewski and was
again reported more recently to Debian by Paul Szabo.
________________________________________________________________________
References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-1999-1332
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0367
http://marc.theaimsgroup.com/?l=bugtraq&m=88998519803911&w=2
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=193375
________________________________________________________________________
Updated Packages:
Corporate Server 2.1:
3e7bff9e74dfacdb5708fdf60b8f18c6 corporate/2.1/RPMS/gzip-1.2.4a-11.2mdk.i586.rpm
ddf940b835e0718d80840694b65067bc corporate/2.1/SRPMS/gzip-1.2.4a-11.2mdk.src.rpm
Mandrake Linux 8.2:
e114d1ff62fe8456d945a11d91362855 8.2/RPMS/gzip-1.2.4a-11.2mdk.i586.rpm
ddf940b835e0718d80840694b65067bc 8.2/SRPMS/gzip-1.2.4a-11.2mdk.src.rpm
Mandrake Linux 8.2/PPC:
0d290a3f2a22396bcc5a6fc7c77aaeaa ppc/8.2/RPMS/gzip-1.2.4a-11.2mdk.ppc.rpm
ddf940b835e0718d80840694b65067bc ppc/8.2/SRPMS/gzip-1.2.4a-11.2mdk.src.rpm
Mandrake Linux 9.0:
3e7bff9e74dfacdb5708fdf60b8f18c6 9.0/RPMS/gzip-1.2.4a-11.2mdk.i586.rpm
ddf940b835e0718d80840694b65067bc 9.0/SRPMS/gzip-1.2.4a-11.2mdk.src.rpm
Mandrake Linux 9.1:
fe732815834057c64e3c4e311ee9462d 9.1/RPMS/gzip-1.2.4a-11.2mdk.i586.rpm
ddf940b835e0718d80840694b65067bc 9.1/SRPMS/gzip-1.2.4a-11.2mdk.src.rpm
Mandrake Linux 9.1/PPC:
c4947b2e7a4de6f2e72c038e953a402f ppc/9.1/RPMS/gzip-1.2.4a-11.2mdk.ppc.rpm
ddf940b835e0718d80840694b65067bc ppc/9.1/SRPMS/gzip-1.2.4a-11.2mdk.src.rpm
Multi Network Firewall 8.2:
e114d1ff62fe8456d945a11d91362855 mnf8.2/RPMS/gzip-1.2.4a-11.2mdk.i586.rpm
ddf940b835e0718d80840694b65067bc mnf8.2/SRPMS/gzip-1.2.4a-11.2mdk.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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