Quantum Secular Labs / Blog / Advisories

CVE-2004-0492: Heap-based buffer overflow in proxy_util.c for mod_proxy in Apache 1.3.25 to 1.3.31 allows remote attackers…

CVE-2004-0492 has a CVSS v2 base score of 10.0 (the maximum on that scale) and NVD lists 7 affected products, including Apache HTTP Server. 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

Heap-based buffer overflow in proxy_util.c for mod_proxy in Apache 1.3.25 to 1.3.31 allows remote attackers to cause a denial of service (process crash) and possibly execute arbitrary code via a negative Content-Length HTTP header field, which causes a large amount of data to be copied.

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

  • Apache HTTP Server: 1.3.26; 1.3.27; 1.3.28; 1.3.29; 1.3.31
  • HP Virtualvault: 11.0.4
  • HP Webproxy: 2.0; 2.1
  • IBM HTTP Server: 1.3.26; 1.3.26.1; 1.3.26.2; 1.3.28
  • Sgi Propack: 2.4
  • HP Vvos: 11.04
  • Openbsd: all versions listed by NVD; 3.4; 3.5

References