CVE-2006-2940
HIGH · CVSS 7.8EPSS 5.1%EU EUVD
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.
Key facts
- CVSS score
- 7.8 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:C- Weakness (CWE)
- CWE-399
- EPSS score
- 5.1% (92th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2006-2937)
- Published
- September 28, 2006
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2006-2937 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
References
- ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2008-007.txt.asc
- ftp://patches.sgi.com/support/free/security/advisories/20061001-01-P.asc
- http://docs.info.apple.com/article.html?artnum=304829
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01118771
- http://issues.rpath.com/browse/RPL-613
- http://itrc.hp.com/service/cki/docDisplay.do?docId=c00805100
- http://itrc.hp.com/service/cki/docDisplay.do?docId=c00849540
- http://kolab.org/security/kolab-vendor-notice-11.txt
- http://lists.apple.com/archives/security-announce/2006/Nov/msg00001.html
- http://lists.grok.org.uk/pipermail/full-disclosure/2006-September/049715.html
- http://lists.vmware.com/pipermail/security-announce/2008/000008.html
- http://marc.info/?l=bind-announce&m=116253119512445&w=2
- http://marc.info/?l=bugtraq&m=130497311408250&w=2
- http://openbsd.org/errata.html#openssl2
- http://openvpn.net/changelog.html
- http://secunia.com/advisories/22094(Vendor Advisory)
- http://secunia.com/advisories/22116(Vendor Advisory)
- http://secunia.com/advisories/22130(Vendor Advisory)
- http://secunia.com/advisories/22165(Vendor Advisory)
- http://secunia.com/advisories/22166(Vendor Advisory)
- http://secunia.com/advisories/22172(Vendor Advisory)
- http://secunia.com/advisories/22186(Vendor Advisory)
- http://secunia.com/advisories/22193(Vendor Advisory)
- http://secunia.com/advisories/22207(Vendor Advisory)
- http://secunia.com/advisories/22212(Vendor Advisory)
- http://secunia.com/advisories/22216(Vendor Advisory)
- http://secunia.com/advisories/22220(Vendor Advisory)
- http://secunia.com/advisories/22240(Vendor Advisory)
- http://secunia.com/advisories/22259(Vendor Advisory)
- http://secunia.com/advisories/22260(Vendor Advisory)
- http://secunia.com/advisories/22284(Vendor Advisory)
- http://secunia.com/advisories/22298
- http://secunia.com/advisories/22330(Vendor Advisory)
- http://secunia.com/advisories/22385(Vendor Advisory)
- http://secunia.com/advisories/22460(Vendor Advisory)
- http://secunia.com/advisories/22487
- http://secunia.com/advisories/22500(Vendor Advisory)
- http://secunia.com/advisories/22544(Vendor Advisory)
- http://secunia.com/advisories/22626
- http://secunia.com/advisories/22671
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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