Quantum Secular Labs / Blog / Advisories

CVE-2003-0209: Sourcefire Snort: Buffer overflow

CVE-2003-0209 has a CVSS v2 base score of 10.0 (the maximum on that scale) and affects Sourcefire Snort, along with 1 other product in NVD’s configuration data. Per its scoring, it can be exploited over the network, without authentication. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

Integer overflow in the TCP stream reassembly module (stream4) for Snort 2.0 and earlier allows remote attackers to execute arbitrary code via large sequence numbers in packets, which enable a heap-based buffer overflow.

Severity breakdown

CVSS v2.0 10.0: AV:N/AC:L/Au:N/C:C/I:C/A:C

  • Access vector: Network. Exploitable remotely over the network.
  • Access complexity: Low. No special conditions are required.
  • Authentication: None. No authentication is needed.
  • Confidentiality impact: Complete. Total information disclosure.
  • Integrity impact: Complete. Total loss of integrity.
  • Availability impact: Complete. Total shutdown of the component.

Affected products

  • Sourcefire Snort: 1.8; 1.8.1; 1.8.2; 1.8.3; 1.8.4; 1.8.5; 1.8.6; 1.8.7; 1.9; 1.9.1
  • Smoothwall: 2.0_beta_4

References