OpenSSL 0.9.7 before 0.9.7l, 0.9.8 before 0.9.8d, and earlier versions allows attackers to cause a denial of service (CPU consumption) via…

Description

OpenSSL 0.9.7 before 0.9.7l, 0.9.8 before 0.9.8d, and earlier versions allows attackers to cause a denial of service (CPU consumption) via parasitic public keys with large (1) "public exponent" or (2) "public modulus" values in X.509 certificates that require extra time to process when using RSA signature verification.

Scores

EPSS (exploitation in 30 days)

5.1% · top 7.6% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Weakness

• n/a
• CWE-399 (opens in a new tab)All about CWE-399 and its CVEs

Affected products

• n/a

  • affected n/a

References (140)

• MDKSA-2006:172 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
• 22212 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• USN-353-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• http://support.attachmate.com/techdocs/2374.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• ADV-2006-4750 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• http://www.vmware.com/support/esx21/doc/esx-213-200612-patch.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://www.uniras.gov.uk/niscc/docs/re-20060928-00661.pdf?lang=en (opens in a new tab)x_refsource_MISCx_transferred
• 23915 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 201534 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
• HPSBMA02250 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
• 1016943 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• 23038 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 2006-0054 (opens in a new tab)vendor-advisoryx_refsource_TRUSTIXx_transferred
• DSA-1195 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• 23309 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 26893 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://www.vmware.com/support/vi3/doc/esx-3069097-patch.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• ADV-2006-4401 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• USN-353-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• http://sourceforge.net/project/shownotes.php?release_id=461863&group_id=69227 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 22116 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• SSRT071304 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
• http://support.avaya.com/elmodocs2/security/ASA-2006-260.htm (opens in a new tab)x_refsource_CONFIRMx_transferred
• GLSA-200612-11 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• 22166 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• RHSA-2006:0695 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 23340 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 22385 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• SUSE-SR:2006:024 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• 22758 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 22487 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• SUSE-SA:2006:058 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• 22772 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• SSRT071299 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
• 31531 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://www.arkoon.fr/upload/alertes/37AK-2006-06-FR-1.1_FAST360_OPENSSL_ASN1.pdf (opens in a new tab)x_refsource_CONFIRMx_transferred
• FreeBSD-SA-06:23.openssl (opens in a new tab)vendor-advisoryx_refsource_FREEBSDx_transferred
• 22165 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://docs.info.apple.com/article.html?artnum=304829 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 20060928 [SECURITY] OpenSSL 0.9.8d and 0.9.7l released (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
• 23794 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• SSRT090208 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
• 22220 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 23680 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://openvpn.net/changelog.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://www.vmware.com/support/server/doc/releasenotes_server.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://issues.rpath.com/browse/RPL-1633 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 25889 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• ADV-2006-4036 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• oval:org.mitre.oval:def:10311 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• ADV-2006-4019 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• [3.9] 20061007 013: SECURITY FIX: October 7, 2006 (opens in a new tab)vendor-advisoryx_refsource_OPENBSDx_transferred
• http://www.vmware.com/support/ace2/doc/releasenotes_ace2.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• 30124 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 22626 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• openssl-publickey-dos(29230) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• 22083 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• MDKSA-2006:178 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
• 23351 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• ADV-2006-3869 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 22671 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 22544 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 22298 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://www.vmware.com/support/player2/doc/releasenotes_player2.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• 22130 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 31492 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• ADV-2006-4329 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 22284 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 24930 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• ADV-2006-4327 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• RHSA-2008:0629 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• GLSA-200610-11 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• http://issues.rpath.com/browse/RPL-613 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 26329 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 22260 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://www.xerox.com/downloads/usa/en/c/cert_ESSNetwork_XRX07001_v1.pdf (opens in a new tab)x_refsource_CONFIRMx_transferred
• ADV-2007-0343 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• ADV-2006-3860 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 23280 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 20060928 rPSA-2006-0175-1 openssl openssl-scripts (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• http://www.vmware.com/support/player/doc/releasenotes_player.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://support.avaya.com/elmodocs2/security/ASA-2006-220.htm (opens in a new tab)x_refsource_CONFIRMx_transferred
• ADV-2006-4264 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• http://www.vmware.com/support/ws6/doc/releasenotes_ws6.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• 22193 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://www.vmware.com/support/esx2/doc/esx-202-200612-patch.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• ADV-2008-2396 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 23155 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 22799 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 200585 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
• SSA:2006-272-01 (opens in a new tab)vendor-advisoryx_refsource_SLACKWAREx_transferred
• ADV-2006-4417 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• http://www.serv-u.com/releasenotes/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://www.oracle.com/technetwork/topics/security/cpujan2007-101493.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://www.vmware.com/support/esx25/doc/esx-254-200612-patch.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• [bind-announce] 20061103 Internet Systems Consortium Security Advisory. [revised] (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• 22094 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 22186 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://www.openssl.org/news/secadv_20060928.txt (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://kolab.org/security/kolab-vendor-notice-11.txt (opens in a new tab)x_refsource_CONFIRMx_transferred
• ADV-2007-2315 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 22500 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• APPLE-SA-2006-11-28 (opens in a new tab)vendor-advisoryx_refsource_APPLEx_transferred
• TA06-333A (opens in a new tab)third-party-advisoryx_refsource_CERTx_transferred
• 20080318 VMSA-2008-0005 Updated VMware Workstation, VMware Player, VMware Server, VMware ACE, and VMware Fusion resolve critical security issues (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• 22216 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• ADV-2006-3820 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• [security-announce] 20080317 VMSA-2008-0005 Updated VMware Workstation, VMware Player, VMware Server, VMware ACE, and VMware Fusion resolve critical security issues (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• HPSBUX02174 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
• OpenPKG-SA-2006.021 (opens in a new tab)vendor-advisoryx_refsource_OPENPKGx_transferred
• http://www.vmware.com/support/ws55/doc/releasenotes_ws55.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• 102747 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
• ADV-2008-0905 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• ADV-2007-1401 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 20247 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• 29261 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
• http://www.vmware.com/security/advisories/VMSA-2008-0005.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• 20070110 VMware ESX server security updates (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• 20060929 rPSA-2006-0175-2 openssl openssl-scripts (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• ADV-2006-3936 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• ADV-2006-4980 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 22240 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 22330 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://www.vmware.com/support/vi3/doc/esx-9986131-patch.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• DSA-1185 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• http://www.arkoon.fr/upload/alertes/41AK-2006-08-FR-1.1_SSL360_OPENSSL_ASN1.pdf (opens in a new tab)x_refsource_CONFIRMx_transferred
• 22207 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• MDKSA-2006:177 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
• 1017522 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• 20061108 Multiple Vulnerabilities in OpenSSL Library (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
• ADV-2006-3902 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• ADV-2007-2783 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 22259 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 22460 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 22172 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://www.vmware.com/support/esx25/doc/esx-253-200612-patch.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• 28276 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• 102668 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
• 20061108 Multiple Vulnerabilities in OpenSSL library (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
• 24950 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_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-2006-2940](https://trackcve.app/badge/CVE-2006-2940.svg)](https://trackcve.app/cve/CVE-2006-2940)

Record last updated 7 Aug 2024, 18:06 UTC.