CVE-2004-0123 Use after free in n/a

What is CVE-2004-0123?

CVE-2004-0123 is a high-severity use after free vulnerability in Microsoft Windows 2000, published on 16 Apr 2004. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Double free vulnerability in the ASN.1 library as used in Windows NT 4.0, Windows 2000, Windows XP, and Windows Server 2003, allows remote attackers to cause a denial of service and possibly execute arbitrary code.

Weakness: CWE-119

Which versions are affected by CVE-2004-0123?

It affects 7 products.

Products include Microsoft Windows 2000, Microsoft Windows 2003 Server, Microsoft Windows 98, Microsoft Windows 98se, Microsoft Windows Me, Microsoft Windows Nt and 1 more.

How do I fix CVE-2004-0123?

No fix has been published for CVE-2004-0123 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2004-0123 being exploited?

There is no known exploitation of CVE-2004-0123 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-mp49-4xhv-78fw.