CVE Catalog

CVE-2004-2652

High
Published: Translated: NVD NIST

Summary

The DecodeTCPOptions function in decode.c in Snort before 2.3.0, when printing TCP/IP options using FAST output or verbose mode, allows remote attackers to cause a denial of service (crash) via packets with invalid TCP/IP options, which trigger a null dereference.

Risk Assessment

An attacker can remotely crash the Snort system, resulting in disruption of network traffic monitoring and potential oversight of attacks.

Recommendation

It is recommended to upgrade Snort to version 2.3.0 or later, which includes a fix that eliminates the null pointer dereference vulnerability.

Related vulnerabilities

Original NVD description (English source)

The DecodeTCPOptions function in decode.c in Snort before 2.3.0, when printing TCP/IP options using FAST output or verbose mode, allows remote attackers to cause a denial of service (crash) via packets with invalid TCP/IP options, which trigger a null dereference.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS