Riskcovery

CVE-2006-4339

Openssl: openssl: signature forgery via improper pkcs-1 padding removal leading to certificate validation bypass

State
Published
Severity
9.1 Critical
Published
Sep 5, 2006
Updated
Oct 30, 2026
Reserved
Aug 24, 2006

Read the record on cve.org

Description

A flaw was found in OpenSSL. When configured to use an RSA key with exponent 3, OpenSSL improperly removes PKCS-1 padding before generating a hash. This allows remote attackers to forge PKCS #1 v1.5 signatures. Consequently, OpenSSL may incorrectly verify X.509 and other certificates, leading to a bypass of trust and authentication mechanisms.

Scores

CVSSScoreVectorSource
3.19.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nredhat

Weaknesses

  • CWE-347 Improper Verification of Cryptographic Signature

Affected Products

ProductVersions
Red Hat Enterprise Linux 3Red Hat
  • 0:0.9.7a-33.18 and laterNot affected
Red Hat Enterprise Linux 3Red Hat
  • 0:0.9.6b-16.43 and laterNot affected
Red Hat Enterprise Linux 4Red Hat
  • 0:0.9.7a-43.11 and laterNot affected
Red Hat Enterprise Linux 4Red Hat
  • 0:0.9.6b-22.43 and laterNot affected
Red Hat Network Satellite Server v 4.2Red Hat
  • 0:5.0.2-3 and laterNot affected
Red Hat Network Satellite Server v 4.2Red Hat
  • 0:1-0 and laterNot affected
Red Hat Network Satellite Server v 4.2 (RHEL3)Red Hat
  • 0:5.0.2-3 and laterNot affected
Red Hat Network Satellite Server v 4.2 (RHEL3)Red Hat
  • 0:1-0 and laterNot affected
Red Hat Network Satellite Server v 5.0Red Hat
  • 0:5.0.2-3 and laterNot affected
Red Hat Network Satellite Server v 5.0Red Hat
  • 0:1-0 and laterNot affected
Red Hat Network Satellite Server v 5.1Red Hat
  • 0:5.1.1-3 and laterNot affected
Red Hat Network Satellite Server v 5.1Red Hat
  • 0:1-0 and laterNot affected
Red Hat Enterprise Linux 10Red Hat
    Red Hat Enterprise Linux 10Red Hat
      Red Hat Enterprise Linux 10Red Hat
        Red Hat Enterprise Linux 10Red Hat
          Red Hat Enterprise Linux 10Red Hat
            Red Hat Enterprise Linux 6Red Hat
              Red Hat Enterprise Linux 7Red Hat
                Red Hat Enterprise Linux 7Red Hat
                  Red Hat Enterprise Linux 8Red Hat
                    Red Hat Enterprise Linux 8Red Hat
                      Red Hat Enterprise Linux 8Red Hat
                        Red Hat Enterprise Linux 8Red Hat
                          Red Hat Enterprise Linux 8Red Hat
                            Red Hat Enterprise Linux 8Red Hat
                              Red Hat Enterprise Linux 9Red Hat
                                Red Hat Enterprise Linux 9Red Hat
                                  Red Hat Enterprise Linux 9Red Hat
                                    Red Hat Enterprise Linux 9Red Hat
                                      Red Hat Enterprise Linux 9Red Hat
                                        Red Hat Enterprise Linux 9Red Hat
                                          Red Hat JBoss Core ServicesRed Hat
                                            Red Hat OpenShift Container Platform 4Red Hat
                                              Red Hat OpenShift Container Platform 4Red Hat

                                                References

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