BID:3732

Microsoft Windows C Runtime Library Format String Vulnerability

Info

Microsoft Windows C Runtime Library Format String Vulnerability

Bugtraq ID:	3732
Class:	Input Validation Error
CVE:
Remote:	Unknown
Local:	Unknown
Published:	Dec 20 2001 12:00AM
Updated:	Dec 20 2001 12:00AM
Credit:	Credited to Chris Anley of @Stake.
Vulnerable:	Microsoft Windows XP Professional Microsoft Windows XP Home Microsoft Windows XP 64-bit Edition Microsoft Windows NT Workstation 4.0 SP6a Microsoft Windows NT Workstation 4.0 SP6 Microsoft Windows NT Workstation 4.0 SP5 Microsoft Windows NT Workstation 4.0 SP4 Microsoft Windows NT Workstation 4.0 SP3 Microsoft Windows NT Workstation 4.0 SP2 Microsoft Windows NT Workstation 4.0 SP1 Microsoft Windows NT Workstation 4.0 Microsoft Windows NT Terminal Server 4.0 SP6 Microsoft Windows NT Terminal Server 4.0 SP5 Microsoft Windows NT Terminal Server 4.0 SP4 Microsoft Windows NT Terminal Server 4.0 SP3 Microsoft Windows NT Terminal Server 4.0 SP2 Microsoft Windows NT Terminal Server 4.0 SP1 Microsoft Windows NT Terminal Server 4.0 Microsoft Windows NT Server 4.0 SP6a + Avaya DefinityOne Media Servers + Avaya DefinityOne Media Servers + Avaya IP600 Media Servers + Avaya IP600 Media Servers + Avaya S3400 Message Application Server 0 + Avaya S8100 Media Servers 0 + Avaya S8100 Media Servers 0 Microsoft Windows NT Server 4.0 SP6 Microsoft Windows NT Server 4.0 SP5 Microsoft Windows NT Server 4.0 SP4 Microsoft Windows NT Server 4.0 SP3 Microsoft Windows NT Server 4.0 SP2 Microsoft Windows NT Server 4.0 SP1 Microsoft Windows NT Server 4.0 Microsoft Windows NT Enterprise Server 4.0 SP6a Microsoft Windows NT Enterprise Server 4.0 SP6 Microsoft Windows NT Enterprise Server 4.0 SP5 Microsoft Windows NT Enterprise Server 4.0 SP4 Microsoft Windows NT Enterprise Server 4.0 SP3 Microsoft Windows NT Enterprise Server 4.0 SP2 Microsoft Windows NT Enterprise Server 4.0 SP1 Microsoft Windows NT Enterprise Server 4.0 Microsoft Windows 2000 Server SP2 Microsoft Windows 2000 Server SP1 Microsoft Windows 2000 Server + Avaya DefinityOne Media Servers + Avaya IP600 Media Servers + Avaya S3400 Message Application Server 0 + Avaya S8100 Media Servers 0 Microsoft Windows 2000 Professional SP2 Microsoft Windows 2000 Professional SP1 Microsoft Windows 2000 Professional Microsoft Windows 2000 Datacenter Server SP2 Microsoft Windows 2000 Datacenter Server SP1 Microsoft Windows 2000 Datacenter Server Microsoft Windows 2000 Advanced Server SP2 Microsoft Windows 2000 Advanced Server SP1 Microsoft Windows 2000 Advanced Server

Not Vulnerable:

Discussion

Microsoft Windows C Runtime Library Format String Vulnerability

The Windows C Runtime Library is a shared library containing instructions for the standard C library functions. It is used by almost all Windows programs compiled from C or C++ source code.

There exists a format string vulnerability in the Windows C Runtime Library that may be exploitable through programs that use the affected functions.

It has been confirmed that this vulnerability is exploitable through SQL Server, however the only possible consequence of a successful attack is a denial of service (code execution is reportedly not possible).

Exploit / POC

Microsoft Windows C Runtime Library Format String Vulnerability

Currently the SecurityFocus staff are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

Solution / Fix

Microsoft Windows C Runtime Library Format String Vulnerability

Solution:
Fixes are available. Microsoft advises that administrators install these fixes only if they feel that they may be exposed. The reason for this is because upgrading the Windows C Runtime Library will affect the entire system (all programs dependent on the library).

Microsoft Windows 2000 Server SP2