mtr: Stack-based buffer overflow

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200806-01 / mtr
Release Date	June 03, 2008
Latest Revision	June 03, 2008: 01
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-analyzer/mtr	< 0.73-r1	>= 0.73-r1	All supported architectures

Related bugreports: #223017

Synopsis

A stack-based buffer overflow was found in mtr, possibly resulting in the execution of arbitrary code.

2. Impact Information

Background

mtr combines the functionality of the 'traceroute' and 'ping' programs in a single network diagnostic tool.

Description

Adam Zabrocki reported a boundary error within the split_redraw() function in the file split.c, possibly leading to a stack-based buffer overflow.

Impact

A remote attacker could use a specially crafted resolved hostname to execute arbitrary code with root privileges. However, it is required that the attacker controls the DNS server used by the victim, and that the "-p" (or "--split") command line option is used.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All mtr users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-analyzer/mtr-0.73-r1"

4. References

CVE-2008-2357

Page updated June 03, 2008

Summary: This is a Gentoo Linux Security Advisory

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