Title: Microsoft Windows C Runtime Library Format String Vulnerability
Severity: LOW
Description:
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.
Format string vulnerabilities typically occur in applications that pass user input to library functions supporting *printf string formatting as the format string argument. When users can control the format string, special format specifiers such as '%n' can be used to write almost arbitrary values to attacker-supplied locations in memory.
In existing format string vulnerabilities, the problem is that the application fails to properly sanitize data before passing it to the *printf function. This vulnerability is different, and lies in the library code rather than in a specific application.
It is reportedly possible for attackers who can pass data to the affected functions in programs using them to exploit this vulnerability.
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).
Affected Products:
- Avaya DefinityOne Media Servers
- Avaya IP600 Media Servers
- Avaya S3400 Message Application Server
- Avaya S8100 Media Servers
- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 Advanced Server SP1
- Microsoft Windows 2000 Advanced Server SP2
- Microsoft Windows 2000 Datacenter Server
- Microsoft Windows 2000 Datacenter Server SP1
- Microsoft Windows 2000 Datacenter Server SP2
- Microsoft Windows 2000 Professional
- Microsoft Windows 2000 Professional SP1
- Microsoft Windows 2000 Professional SP2
- Microsoft Windows 2000 Server
- Microsoft Windows 2000 Server SP1
- Microsoft Windows 2000 Server SP2
- Microsoft Windows NT Enterprise Server 4.0
- Microsoft Windows NT Enterprise Server 4.0 SP1
- Microsoft Windows NT Enterprise Server 4.0 SP2
- Microsoft Windows NT Enterprise Server 4.0 SP3
- Microsoft Windows NT Enterprise Server 4.0 SP4
- Microsoft Windows NT Enterprise Server 4.0 SP5
- Microsoft Windows NT Enterprise Server 4.0 SP6
- Microsoft Windows NT Enterprise Server 4.0 SP6a
- Microsoft Windows NT Server 4.0
- Microsoft Windows NT Server 4.0 SP1
- Microsoft Windows NT Server 4.0 SP2
- Microsoft Windows NT Server 4.0 SP3
- Microsoft Windows NT Server 4.0 SP4
- Microsoft Windows NT Server 4.0 SP5
- Microsoft Windows NT Server 4.0 SP6
- Microsoft Windows NT Server 4.0 SP6a
- Microsoft Windows NT Terminal Server 4.0
- Microsoft Windows NT Terminal Server 4.0 SP1
- Microsoft Windows NT Terminal Server 4.0 SP2
- Microsoft Windows NT Terminal Server 4.0 SP3
- Microsoft Windows NT Terminal Server 4.0 SP4
- Microsoft Windows NT Terminal Server 4.0 SP5
- Microsoft Windows NT Terminal Server 4.0 SP6
- Microsoft Windows NT Workstation 4.0
- Microsoft Windows NT Workstation 4.0 SP1
- Microsoft Windows NT Workstation 4.0 SP2
- Microsoft Windows NT Workstation 4.0 SP3
- Microsoft Windows NT Workstation 4.0 SP4
- Microsoft Windows NT Workstation 4.0 SP5
- Microsoft Windows NT Workstation 4.0 SP6
- Microsoft Windows NT Workstation 4.0 SP6a
- Microsoft Windows XP 64-bit Edition
- Microsoft Windows XP Home
- Microsoft Windows XP Professional
References:
- @stake advisories <advisories@atstake.com>: @stake advisory: Multiple overflow and format string vulnerabilities in MSSQL
- CERT/CC: Vulnerability Note VU#700575
- Microsoft: Microsoft Security Bulletin (MS01-060)
- Microsoft: Microsoft Technet Security
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