noip-updater: Execution of arbitrary code

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200901-12 / noip-updater
Release Date	January 18, 2009
Latest Revision	January 18, 2009: 01
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-dns/noip-updater	< 2.1.9	>= 2.1.9	All supported architectures

Related bugreports: #248709

Synopsis

A buffer overflow in noip-updater can lead to arbitrary code execution.

2. Impact Information

Background

noip-updater is a tool used for updating IP addresses of dynamic DNS records at no-ip.com.

Description

xenomuta found out that the GetNextLine() function in noip2.c misses a length check, leading to a stack-based buffer overflow.

Impact

A remote attacker could exploit this vulnerability to execute arbitrary code by sending a specially crafted HTTP message to the client. NOTE: Successful exploitation requires a man in the middle attack, a DNS spoofing attack or a compromise of no-ip.com servers.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All noip-updater users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dns/noip-updater-2.1.9"

4. References

CVE-2008-5297

Updated January 18, 2009

Summary: This is a Gentoo Linux Security Advisory

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