CVE-2009-2523 Memory corruption in n/a

What is CVE-2009-2523?

CVE-2009-2523 is a critical memory corruption vulnerability in Microsoft Windows 2000, published on 11 Nov 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The License Logging Server (llssrv.exe) in Microsoft Windows 2000 SP4 allows remote attackers to execute arbitrary code via an RPC message containing a string without a null terminator, which triggers a heap-based buffer overflow in the LlsrLicenseRequestW method, aka "License Logging Server Heap Overflow Vulnerability."

Weakness: CWE-787, CWE-125

Which versions are affected by CVE-2009-2523?

It affects 1 product.

Products include Microsoft Windows 2000.

How do I fix CVE-2009-2523?

No fix has been published for CVE-2009-2523 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2009-2523 being exploited?

There is no known exploitation of CVE-2009-2523 in the wild and no public exploit code.

Other vulnerabilities in Microsoft Windows 2000

• CVE-2008-4250 Microsoft Windows Buffer Overflow Exploited Critical 9.8
• CVE-2010-0232 Microsoft Windows Kernel Exception Handler Exploited High 7.8
• CVE-2009-1123 Microsoft Windows Improper Input Validation Exploited High 7.8
• CVE-2002-0367 Microsoft Windows Privilege Escalation Exploited High 7.8
• CVE-2010-0269 Memory corruption in n/a Critical 10.0

All Microsoft Windows 2000 vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-rchx-q8j2-p9fp.