CVE-2006-4790

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.

Affected products

• gnu / gnutls1.0.17 – 1.0.17
• gnu / gnutls1.0.18 – 1.0.18
• gnu / gnutls1.0.19 – 1.0.19
• gnu / gnutls1.0.20 – 1.0.20
• gnu / gnutls1.0.21 – 1.0.21
• gnu / gnutls1.0.22 – 1.0.22
• gnu / gnutls1.0.23 – 1.0.23
• gnu / gnutls1.0.24 – 1.0.24
• gnu / gnutls1.0.25 – 1.0.25
• gnu / gnutls1.1.14 – 1.1.14
• gnu / gnutls1.1.15 – 1.1.15
• gnu / gnutls1.1.16 – 1.1.16
• gnu / gnutls1.1.17 – 1.1.17
• gnu / gnutls1.1.18 – 1.1.18
• gnu / gnutls1.1.19 – 1.1.19
• gnu / gnutls1.1.20 – 1.1.20
• gnu / gnutls1.1.21 – 1.1.21
• gnu / gnutls1.1.22 – 1.1.22
• gnu / gnutls1.1.23 – 1.1.23
• gnu / gnutls1.2.0 – 1.2.0
• gnu / gnutls1.2.1 – 1.2.1
• gnu / gnutls1.2.2 – 1.2.2
• gnu / gnutls1.2.3 – 1.2.3
• gnu / gnutls1.2.4 – 1.2.4
• gnu / gnutls1.2.5 – 1.2.5
• gnu / gnutls1.2.6 – 1.2.6
• gnu / gnutls1.2.7 – 1.2.7
• gnu / gnutls1.2.8 – 1.2.8
• gnu / gnutls1.2.8.1a1 – 1.2.8.1a1
• gnu / gnutls1.2.9 – 1.2.9
• gnu / gnutls1.2.10 – 1.2.10
• gnu / gnutls1.2.11 – 1.2.11
• gnu / gnutls1.3.0 – 1.3.0
• gnu / gnutls1.3.1 – 1.3.1
• gnu / gnutls1.3.2 – 1.3.2
• gnu / gnutls1.3.3 – 1.3.3
• gnu / gnutls1.3.4 – 1.3.4
• gnu / gnutls1.3.5 – 1.3.5
• gnu / gnutls1.4.0 – 1.4.0
• gnu / gnutls1.4.1 – 1.4.1

References

• VENDOR_ADVISORYhttp://secunia.com/advisories/25762
• VENDOR_ADVISORYhttp://secunia.com/advisories/22992
• VENDOR_ADVISORYhttp://secunia.com/advisories/21937
• VENDOR_ADVISORYhttp://secunia.com/advisories/22049
• MISChttp://securitytracker.com/id?1016844
• VENDOR_ADVISORYhttp://www.vupen.com/english/advisories/2006/3899
• MISChttp://www.securityfocus.com/bid/20027
• VENDOR_ADVISORYhttp://www.novell.com/linux/security/advisories/2006_23_sr.html
• VENDOR_ADVISORYhttp://www.mandriva.com/security/advisories?name=MDKSA-2006:166
• MISChttp://www.redhat.com/support/errata/RHSA-2006-0680.html
• MISChttp://www.gnu.org/software/gnutls/security.html
• MISChttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9937
• MISChttp://sunsolve.sun.com/search/document.do?assetkey=1-26-102970-1
• VENDOR_ADVISORYhttp://www.vupen.com/english/advisories/2006/3635
• VENDOR_ADVISORYhttp://secunia.com/advisories/21942
• MAILING_LISThttp://lists.gnupg.org/pipermail/gnutls-dev/2006-September/001205.html
• VENDOR_ADVISORYhttp://secunia.com/advisories/22080
• MISChttp://security.gentoo.org/glsa/glsa-200609-15.xml
• VENDOR_ADVISORYhttp://www.novell.com/linux/security/advisories/2007_10_ibmjava.html
• VENDOR_ADVISORYhttp://www.debian.org/security/2006/dsa-1182
• MISChttp://support.avaya.com/elmodocs2/security/ASA-2006-250.htm
• MISChttps://exchange.xforce.ibmcloud.com/vulnerabilities/28953
• MISChttp://sunsolve.sun.com/search/document.do?assetkey=1-26-102648-1
• VENDOR_ADVISORYhttp://secunia.com/advisories/21973
• VENDOR_ADVISORYhttp://secunia.com/advisories/22226
• VENDOR_ADVISORYhttp://secunia.com/advisories/22084
• MAILING_LISThttp://lists.gnupg.org/pipermail/gnutls-dev/2006-September/001212.html
• VENDOR_ADVISORYhttp://www.ubuntu.com/usn/usn-348-1
• VENDOR_ADVISORYhttp://www.vupen.com/english/advisories/2007/2289
• VENDOR_ADVISORYhttp://secunia.com/advisories/22097