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Ubuntu alert USN-28-1 (sudo)
| From: | Martin Pitt <martin.pitt@canonical.com> | |
| To: | ubuntu-security-announce@lists.ubuntu.com | |
| Subject: | [USN-28-1] sudo vulnerability | |
| Date: | Wed, 17 Nov 2004 20:59:30 +0100 | |
| Cc: | bugtraq@securityfocus.com, full-disclosure@lists.netsys.com |
=========================================================== Ubuntu Security Notice USN-28-1 November 17, 2004 sudo vulnerability http://www.sudo.ws/sudo/alerts/bash_functions.html =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 4.10 (Warty Warthog) The following packages are affected: sudo The problem can be corrected by upgrading the affected package to version 1.6.7p5-1ubuntu4.1. In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: Liam Helmer discovered an input validation flaw in sudo. When the standard shell "bash" starts up, it searches the environment for variables with a value beginning with "()". For each of these variables a function with the same name is created, with the function body filled in from the environment variable's value. A malicious user with sudo access to a shell script that uses bash can use this feature to substitute arbitrary commands for any non-fully-qualified programs called from the script. Therefore this flaw can lead to privilege escalation. Source archives: http://security.ubuntu.com/ubuntu/pool/main/s/sudo/sudo_1... Size/MD5: 19512 8732535adda58d8421cc40dfa0d4d277 http://security.ubuntu.com/ubuntu/pool/main/s/sudo/sudo_1... Size/MD5: 585 cad376439bd2828752b2ea6aca5ae8ca http://security.ubuntu.com/ubuntu/pool/main/s/sudo/sudo_1... Size/MD5: 349785 55d503e5c35bf1ea83d38244e0242aaf amd64 architecture (Athlon64, Opteron, EM64T Xeon) http://security.ubuntu.com/ubuntu/pool/main/s/sudo/sudo_1... Size/MD5: 155924 22253ea7307fdbab6c01e357a4dba9af i386 architecture (x86 compatible Intel/AMD) http://security.ubuntu.com/ubuntu/pool/main/s/sudo/sudo_1... Size/MD5: 145358 4492baa2b88e8707efac77943058cc07 powerpc architecture (Apple Macintosh G3/G4/G5) http://security.ubuntu.com/ubuntu/pool/main/s/sudo/sudo_1... Size/MD5: 152864 18fa79642ba2ad55923a0a5f8cb771ba -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com http://lists.ubuntu.com/mailman/listinfo/ubuntu-security-...
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