OpenSSL 0.9.6 before 0.9.6d does not properly handle unknown message types, which allows remote attackers to cause a denial of service…

Description

OpenSSL 0.9.6 before 0.9.6d does not properly handle unknown message types, which allows remote attackers to cause a denial of service (infinite loop), as demonstrated using the Codenomicon TLS Test Tool.

Scores

EPSS (exploitation in 30 days)

7.2% · top 5.7% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.

Weakness

• n/a

Affected products

• n/a

  • affected n/a

References (23)

• 9899 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• ESA-20040317-003 (opens in a new tab)vendor-advisoryx_refsource_ENGARDEx_transferred
• 20040317 Re: New OpenSSL releases fix denial of service attacks [17 March 2004] (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• RHSA-2004:121 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• CLA-2004:834 (opens in a new tab)vendor-advisoryx_refsource_CONECTIVAx_transferred
• openssl-tls-dos(15509) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• http://www.uniras.gov.uk/vuls/2004/224012/index.htm (opens in a new tab)x_refsource_MISCx_transferred
• FEDORA-2004-095 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• 57524 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
• oval:org.mitre.oval:def:871 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• oval:org.mitre.oval:def:11755 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• VU#465542 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
• TA04-078A (opens in a new tab)third-party-advisoryx_refsource_CERTx_transferred
• GLSA-200403-03 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• 11139 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• RHSA-2004:120 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2004:119 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• oval:org.mitre.oval:def:902 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• RHSA-2004:139 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 2004-0012 (opens in a new tab)vendor-advisoryx_refsource_TRUSTIXx_transferred
• 20040508 [FLSA-2004:1395] Updated OpenSSL resolves security vulnerability (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• 20040317 Cisco OpenSSL Implementation Vulnerability (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
• DSA-465 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2004-0081](https://trackcve.app/badge/CVE-2004-0081.svg)](https://trackcve.app/cve/CVE-2004-0081)

Record last updated 8 Aug 2024, 00:01 UTC.