Slackware: 'sudo' Local buffer overflow vulnerability
Posted by LinuxSecurity.com Team   
Slackware New sudo packages are available to fix a security problem which may allow users to become root, or to execute arbitrary code as root.

Date: Thu, 25 Apr 2002 14:10:26 -0700 (PDT)
From: Slackware Security Team <security@slackware.com>
To: slackware-security@slackware.com
Cc: bugtraq@securityfocus.com
Subject: [slackware-security] sudo upgrade fixes a potential vulnerability


New sudo packages are available to fix a security problem which may allow
users to become root, or to execute arbitrary code as root.

Here's the information from the Slackware 8.0 ChangeLog:

----------------------------
Thu Apr 25 12:00:50 PDT 2002
patches/packages/sudo.tgz:  Upgraded to sudo-1.6.6.
  This version of sudo fixes a security problem whereby a local user may gain
  root access through corruption of the heap (Off-By-Five).
  This issue was discovered by Global InterSec LLC, and more information may
  be found on their web site:
   http://www.globalintersec.com/adv/sudo-2002041701.txt
The discussion on the site indicates that this problem may only be exploitable
  on systems that use PAM, which Slackware does not use.  However, in the
  absence of proof, it still seems prudent to upgrade sudo immediately.
  (* Security fix *)
----------------------------


WHERE TO FIND THE NEW PACKAGES:
-------------------------------

Updated sudo package for Slackware 7.1: 
ftp://ftp.slackware.com/pub/slackware/slackware-7.1/patches/packages/sudo.tgz

Updated sudo package for Slackware 8.0: 
ftp://ftp.slackware.com/pub/slackware/slackware-8.0/patches/packages/sudo.tgz

Updated sudo package for Slackware -current: 
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/ap/sudo-1.6.6-i386-1.tgz


MD5 SIGNATURE:
--------------

Here is the md5sum for the package:

Slackware 7.1:
1f2eb2c0e01c5d2182431cc401f78a89  sudo.tgz

Slackware 8.0:
d0598233fefeb9d37450eec10a087e07  sudo.tgz

Slackware -current:
26c70a9a740823353300b23f110b3cca  sudo-1.6.6-i386-1.tgz


INSTALLATION INSTRUCTIONS:
--------------------------

As root, upgrade to the new sudo.tgz package:
# upgradepkg sudo.tgz

Remember, it's also a good idea to backup configuration files before
upgrading packages.

- Slackware Linux Security Team
   http://www.slackware.com