Vulnerability in OpenSSL
CVE-2006-2940
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.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 7.8 (High). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.050 (91.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.050 · newest: 0.050 · change: 0.000
Affected products
- OpenSSL — versions 0.9.1c, 0.9.2b, 0.9.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.mandriva.com/security/advisories (vendor-advisory)
- secunia.com/advisories/22212 (Vendor Advisory, third-party-advisory)
- www.ubuntu.com/usn/usn-353-2 (vendor-advisory)
- support.attachmate.com/techdocs/2374.html
- www.vupen.com/english/advisories/2006/4750 (vdb-entry)
- www.vmware.com/support/esx21/doc/esx-213-200612-patch.html
- www.uniras.gov.uk/niscc/docs/re-20060928-00661.pdf
- secunia.com/advisories/23915 (third-party-advisory)
- sunsolve.sun.com/search/document.do (vendor-advisory)
- h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp (vendor-advisory)
Frequently asked questions
- What is CVE-2006-2940?
- CVE-2006-2940 is a vulnerability in OpenSSL, classified under CWE-399. Published 2006-09-28.
- Is CVE-2006-2940 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.