Gentoo Websites Logo
Go to: Gentoo Home Documentation Forums Lists Bugs Planet Store Wiki Get Gentoo!
Bug 176281 - net-dns/mydns DNS Update Denial of Service
Summary: net-dns/mydns DNS Update Denial of Service
Status: RESOLVED DUPLICATE of bug 176130
Alias: None
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: High normal (vote)
Assignee: Gentoo Security
URL: http://secunia.com/advisories/25007/
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2007-04-27 20:10 UTC by Lars Hartmann
Modified: 2007-04-27 20:17 UTC (History)
0 users

See Also:
Package list:
Runtime testing required: ---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Lars Hartmann 2007-04-27 20:10:53 UTC 
mu-b has reported a vulnerability in MyDNS, which can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an input validation error within the "update_gobble_rr" function in src/mydns/update.c. This can be exploited to cause heap based buffer overflow and to crash the application.

Successful exploitation requires update privileges and that "allow-update" is set to "yes" in mydns.conf.

The vulnerability is reported in version 1.1.0. Other versions may also be affected.

Solution:
Set "allow-update" to "no".

Provided and/or discovered by:
mu-b

Original Advisory:
http://lists.grok.org.uk/pipermail/full-disclosure/2007-April/054024.html

Reproducible: Always
Comment 1 Jonathan Smith (RETIRED) gentoo-dev 2007-04-27 20:17:33 UTC 

*** This bug has been marked as a duplicate of bug 176130 ***