| 1 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 2 |
Gentoo Linux Security Advisory GLSA 200503-27 |
| 3 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 4 |
http://security.gentoo.org/ |
| 5 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 6 |
|
| 7 |
Severity: Normal |
| 8 |
Title: Xzabite dyndnsupdate: Multiple vulnerabilities |
| 9 |
Date: March 21, 2005 |
| 10 |
Bugs: #84659 |
| 11 |
ID: 200503-27 |
| 12 |
|
| 13 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 14 |
|
| 15 |
Synopsis |
| 16 |
======== |
| 17 |
|
| 18 |
Xzabite's dyndnsupdate software suffers from multiple vulnerabilities, |
| 19 |
potentially resulting in the remote execution of arbitrary code. |
| 20 |
|
| 21 |
Background |
| 22 |
========== |
| 23 |
|
| 24 |
dyndnsupdate is a dyndns.org data updater written by Fredrik "xzabite" |
| 25 |
Haglund. |
| 26 |
|
| 27 |
Affected packages |
| 28 |
================= |
| 29 |
|
| 30 |
------------------------------------------------------------------- |
| 31 |
Package / Vulnerable / Unaffected |
| 32 |
------------------------------------------------------------------- |
| 33 |
1 net-misc/dyndnsupdate <= 0.6.15 Vulnerable! |
| 34 |
------------------------------------------------------------------- |
| 35 |
NOTE: Certain packages are still vulnerable. Users should migrate |
| 36 |
to another package if one is available or wait for the |
| 37 |
existing packages to be marked stable by their |
| 38 |
architecture maintainers. |
| 39 |
|
| 40 |
Description |
| 41 |
=========== |
| 42 |
|
| 43 |
Toby Dickenson discovered that dyndnsupdate suffers from multiple |
| 44 |
overflows. |
| 45 |
|
| 46 |
Impact |
| 47 |
====== |
| 48 |
|
| 49 |
A remote attacker, posing as a dyndns.org server, could execute |
| 50 |
arbitrary code with the rights of the user running dyndnsupdate. |
| 51 |
|
| 52 |
Workaround |
| 53 |
========== |
| 54 |
|
| 55 |
There is no known workaround at this time. |
| 56 |
|
| 57 |
Resolution |
| 58 |
========== |
| 59 |
|
| 60 |
Currently, there is no released version of dyndnsupdate that contains a |
| 61 |
fix for these issues. The original xzabite.org distribution site is |
| 62 |
dead, the code contains several other problems and more secure |
| 63 |
alternatives exist, such as the net-dns/ddclient package. Therefore, |
| 64 |
the dyndnsupdate package has been hard-masked prior to complete removal |
| 65 |
from Portage, and current users are advised to unmerge the package: |
| 66 |
|
| 67 |
# emerge --unmerge net-misc/dyndnsupdate |
| 68 |
|
| 69 |
Availability |
| 70 |
============ |
| 71 |
|
| 72 |
This GLSA and any updates to it are available for viewing at |
| 73 |
the Gentoo Security Website: |
| 74 |
|
| 75 |
http://security.gentoo.org/glsa/glsa-200503-27.xml |
| 76 |
|
| 77 |
Concerns? |
| 78 |
========= |
| 79 |
|
| 80 |
Security is a primary focus of Gentoo Linux and ensuring the |
| 81 |
confidentiality and security of our users machines is of utmost |
| 82 |
importance to us. Any security concerns should be addressed to |
| 83 |
security@g.o or alternatively, you may file a bug at |
| 84 |
http://bugs.gentoo.org. |
| 85 |
|
| 86 |
License |
| 87 |
======= |
| 88 |
|
| 89 |
Copyright 2005 Gentoo Foundation, Inc; referenced text |
| 90 |
belongs to its owner(s). |
| 91 |
|
| 92 |
The contents of this document are licensed under the |
| 93 |
Creative Commons - Attribution / Share Alike license. |
| 94 |
|
| 95 |
http://creativecommons.org/licenses/by-sa/2.0 |
Archives