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.
EPSS: 0.049 (91.2th percentile) — read the EPSS interpretation.
Affected products
- Openssl — versions 0.9.1c, 0.9.2b, 0.9.3
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (vendor-advisory, x_refsource_MANDRIVA)
- secalert@redhat.com (x_refsource_SECUNIA, Vendor Advisory, third-party-advisory)
- secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory)
- secalert@redhat.com (x_refsource_CONFIRM)
- secalert@redhat.com (vdb-entry, x_refsource_VUPEN)
- secalert@redhat.com (x_refsource_CONFIRM)
- secalert@redhat.com (x_refsource_MISC)
- secalert@redhat.com (x_refsource_SECUNIA, third-party-advisory)
- secalert@redhat.com (vendor-advisory, x_refsource_SUNALERT)
- secalert@redhat.com (x_refsource_HP, 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.