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Slackware Linux Advisory: nfs-utils

Jul 15, 2003, 03:59 (3 Talkback[s])

[slackware-security] nfs-utils off-by-one overflow fixed (SSA:2003-195-01)

New nfs-utils packages are available for Slackware 8.1, 9.0, and -current to fix an off-by-one buffer overflow in xlog.c. Thanks to Janusz Niewiadomski for discovering and reporting this problem.

The CVE (Common Vulnerabilities and Exposures) Project has assigned the identification number CAN-2003-0252 to this issue.

Here are the details from the Slackware 9.0 ChangeLog:
+--------------------------+
iMon Jul 14 14:15:34 PDT 2003
patches/packages/nfs-utils-1.0.4-i386-1.tgz: Upgraded to nfs-utils-1.0.4. This fixes an off-by-one buffer overflow in xlog.c which could be used by an attacker to produce a denial of NFS service, or to execute arbitrary code. All sites providing NFS services should upgrade to this new package immediately.
(* Security fix *)
+--------------------------+

WHERE TO FIND THE NEW PACKAGES:

Updated package for Slackware 8.1:
ftp://ftp.slackware.com/pub/slackware/slackware-8.1/patches/packages/nfs-utils-1.0.4-i386-1.tgz

Updated package for Slackware 9.0:
ftp://ftp.slackware.com/pub/slackware/slackware-9.0/patches/packages/nfs-utils-1.0.4-i386-1.tgz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/nfs-utils-1.0.4-i486-1.tgz

MD5 SIGNATURES:

Slackware 8.1 package:
e6853189637bab81e7ba145ba3a401ae nfs-utils-1.0.4-i386-1.tgz

Slackware 9.0 package:
92d45eeb49bade596c78c42b72af8807 nfs-utils-1.0.4-i386-1.tgz

Slackware -current package:
78ab9c34e3e01243626697d028a3ade2 nfs-utils-1.0.4-i486-1.tgz

INSTALLATION INSTRUCTIONS:

First, if the NFS server is running, stop it: . /etc/rc.d/rc.nfsd stop

Then upgrade using upgradepkg (as root): upgradepkg nfs-utils-1.0.4-i386-1.tgz

Finally, restart NFS services:
. /etc/rc.d/rc.nfsd start

+-----+

Slackware Linux Security Team
http://slackware.com/gpg-key
security@slackware.com