CVE-2006-4790
MEDIUM severity · CVSS 5
5CVSS MEDIUM
Summary
verify.c in GnuTLS before 1.4.4, when using an RSA key with exponent 3, does not properly handle excess data in the digestAlgorithm.parameters field when generating a hash, which allows remote attackers to forge a PKCS #1 v1.5 signature that is signed by that RSA key and prevents GnuTLS from correctly verifying X.509 and other certificates that use PKCS, a variant of CVE-2006-4339.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges required—
User interaction—
Confidentiality impactNone
Integrity impact—
Availability impactNone
Exploit probability (EPSS)2%
AV:N/AC:L/Au:N/C:N/I:P/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://lists.gnupg.org/pipermail/gnutls-dev/2006-September/001205.html
- http://lists.gnupg.org/pipermail/gnutls-dev/2006-September/001212.html
- http://secunia.com/advisories/21937
- http://secunia.com/advisories/21942
- http://secunia.com/advisories/21973
- http://secunia.com/advisories/22049
- http://secunia.com/advisories/22080
- http://secunia.com/advisories/22084