Bug 176281

Summary:	net-dns/mydns DNS Update Denial of Service
Product:	Gentoo Security	Reporter:	Lars Hartmann <lars>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED DUPLICATE
Severity:	normal
Priority:	High
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	http://secunia.com/advisories/25007/
Whiteboard:
Package list:		Runtime testing required:	---

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 ***