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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.00%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 2.0
- 7.8 HIGHAV:N/AC:L/Au:N/C:N/I:N/A:C
- EPSS
- 5.00% probability · 92th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-399
- Affected
- openssl/openssl
- Source
- secalert@redhat.com
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/22094Vendor Advisory
- http://secunia.com/advisories/22116Vendor Advisory
- http://secunia.com/advisories/22130Vendor Advisory
- http://secunia.com/advisories/22165Vendor Advisory
- http://secunia.com/advisories/22166Vendor Advisory
- http://secunia.com/advisories/22172Vendor Advisory
- http://secunia.com/advisories/22186Vendor Advisory
- http://secunia.com/advisories/22193Vendor Advisory
- http://secunia.com/advisories/22207Vendor Advisory
- http://secunia.com/advisories/22212Vendor Advisory
- http://secunia.com/advisories/22216Vendor Advisory
- http://secunia.com/advisories/22220Vendor Advisory
- http://secunia.com/advisories/22240Vendor Advisory
- http://secunia.com/advisories/22259Vendor Advisory
- http://secunia.com/advisories/22260Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.