CVE-2006-4790
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…
Does this matter?
Lower severity and a low EPSS score (2.51%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N
- EPSS
- 2.51% probability · 84th percentile
- CISA KEV
- Not listed
- Affected
- gnu/gnutls
- Source
- secalert@redhat.com
References
- 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
- http://secunia.com/advisories/22097
- http://secunia.com/advisories/22226
- http://secunia.com/advisories/22992
- http://secunia.com/advisories/25762
- http://security.gentoo.org/glsa/glsa-200609-15.xml
- http://securitytracker.com/id?1016844
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-102648-1
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-102970-1
- http://support.avaya.com/elmodocs2/security/ASA-2006-250.htm
- http://www.debian.org/security/2006/dsa-1182
- http://www.gnu.org/software/gnutls/security.htmlPatch
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:166
- http://www.novell.com/linux/security/advisories/2006_23_sr.html
- http://www.novell.com/linux/security/advisories/2007_10_ibmjava.html
- http://www.redhat.com/support/errata/RHSA-2006-0680.htmlPatch, Vendor Advisory
- http://www.securityfocus.com/bid/20027
- http://www.ubuntu.com/usn/usn-348-1
- http://www.vupen.com/english/advisories/2006/3635
- http://www.vupen.com/english/advisories/2006/3899
- http://www.vupen.com/english/advisories/2007/2289
- https://exchange.xforce.ibmcloud.com/vulnerabilities/28953
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9937
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.