CVE-2006-4790: Medium severity GNU GnuTLS vulnerability
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.
Affected Software
Remediation
Patch Available
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2006-4790?
The severity of CVE-2006-4790 is classified as moderate as it allows potential forgery of signatures using vulnerable RSA keys.
How do I fix CVE-2006-4790?
To fix CVE-2006-4790, update GnuTLS to a version greater than 1.4.4 where the vulnerability has been addressed.
Which versions of GnuTLS are affected by CVE-2006-4790?
CVE-2006-4790 affects GnuTLS versions prior to 1.4.4, including all versions from 1.0.17 to 1.4.1.
Can CVE-2006-4790 be exploited remotely?
Yes, CVE-2006-4790 can be exploited remotely, allowing attackers to forge signatures that could compromise system integrity.
What does CVE-2006-4790 affect in GnuTLS?
CVE-2006-4790 affects the hash generation process when using RSA keys with exponent 3, leading to improper handling of excess data.