Vulnerability in OpenSSL
CVE-2006-4339
OpenSSL before 0.9.7, 0.9.7 before 0.9.7k, and 0.9.8 before 0.9.8c, when using an RSA key with exponent 3, removes PKCS-1 padding before generating a hash, which allows remote attackers to forge a PKCS #1 v1.5 signature that is signed by that RSA key and prevents OpenSSL from correctly verifying X.509 and other certificates that use PKCS #1.
Vulnerability class: POODLE (CVE-2014-3566)
Published · last modified .
CVSS v2 metric
CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N. 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.matasano.com/log/469/many-rsa-signatures-may-be-forgeable-in-openssl-and-el…
- www.vupen.com/english/advisories/2006/4750 (vdb-entry)
- h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp (vendor-advisory)
- www.vupen.com/english/advisories/2006/3453 (vdb-entry)
- www.vmware.com/support/esx21/doc/esx-213-200612-patch.html
- 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)
- jvn.jp/en/jp/JVN51615542/index.html (third-party-advisory)
- docs.info.apple.com/article.html
Frequently asked questions
- What is CVE-2006-4339?
- CVE-2006-4339 is a vulnerability in OpenSSL, classified under Cryptographic Issues. Published 2006-09-05.
- Is CVE-2006-4339 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.