Mod_NTLM Authorization Heap Overflow Vulnerability

Bugtraq ID:	7388
Class:	Boundary Condition Error
CVE:
Remote:	Yes
Local:	No
Published:	Apr 21 2003 12:00AM
Updated:	Apr 21 2003 12:00AM
Credit:	Discovery of this vulnerability has been credited to Matthew Murphy <[email protected]>
Vulnerable:	mod_ntlm mod_ntlm2 0.1 - Apache Apache 2.0.45 - Apache Apache 2.0.44 - Apache Apache 2.0.43 - Apache Apache 2.0.42 - Apache Apache 2.0.41 - Apache Apache 2.0.40 - Apache Apache 2.0.39 - Apache Apache 2.0.38 - Apache Apache 2.0.37 - Apache Apache 2.0.36 - Apache Apache 2.0.35 - Apache Apache 2.0.32 - Apache Apache 2.0.28 - Apache Apache 2.0 mod_ntlm mod_ntlm 0.4 - Apache Apache 1.3.27 - Apache Apache 1.3.26 - Apache Apache 1.3.25 - Apache Apache 1.3.24 - Apache Apache 1.3.23 - Apache Apache 1.3.22 - Apache Apache 1.3.20 - Apache Apache 1.3.19 - Apache Apache 1.3.18 - Apache Apache 1.3.17 - Apache Apache 1.3.14 - Apache Apache 1.3.12 - Apache Apache 1.3.11 - Apache Apache 1.3.9 - Apache Apache 1.3.6 - Apache Apache 1.3.4 - Apache Apache 1.3.3 - Apache Apache 1.3.1 - Apache Apache 1.3 mod_ntlm mod_ntlm 0.3 mod_ntlm mod_ntlm 0.2 mod_ntlm mod_ntlm 0.1
Not Vulnerable:

Mod_NTLM Authorization Heap Overflow Vulnerability

The mod_ntlm Apache module has been reported prone to a heap overflow vulnerability.

The vulnerability occurs due to a lack of sufficient bounds checking performed on user-supplied data, stored in heap memory. By supplying excessive data an attacker may trigger a buffer overflow and corrupt crucial memory management structures. This may result in the execution of arbitrary code in the context of the Apache server.

This vulnerability is reported to affect mod_ntlm <= v0.4 for Apache 1.3 and mod_ntlmv2 version 0.1 for Apache 2.0.