Vulnerability Description
The _gnutls_x509_verify_certificate function in lib/x509/verify.c in libgnutls in GnuTLS before 2.6.1 trusts certificate chains in which the last certificate is an arbitrary trusted, self-signed certificate, which allows man-in-the-middle attackers to insert a spoofed certificate for any Distinguished Name (DN).
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Gnutls | < 2.6.1 |
| Fedoraproject | Fedora | 8 |
| Canonical | Ubuntu Linux | 6.06 |
| Debian | Debian Linux | 4.0 |
| Opensuse | Opensuse | >= 10.3, <= 11.1 |
| Suse | Linux Enterprise | 10.0 |
| Suse | Linux Enterprise Server | 10 |
Related Weaknesses (CWE)
References
- http://article.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3215Broken LinkPatch
- http://article.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3217Broken Link
- http://lists.opensuse.org/opensuse-security-announce/2008-12/msg00002.htmlMailing List
- http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00010.htmlMailing List
- http://secunia.com/advisories/32619Broken LinkVendor Advisory
- http://secunia.com/advisories/32681Broken Link
- http://secunia.com/advisories/32687Broken Link
- http://secunia.com/advisories/32879Broken Link
- http://secunia.com/advisories/33501Broken Link
- http://secunia.com/advisories/33694Broken Link
- http://secunia.com/advisories/35423Broken Link
- http://security.gentoo.org/glsa/glsa-200901-10.xmlThird Party Advisory
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-260528-1Broken Link
- http://wiki.rpath.com/Advisories:rPSA-2008-0322Broken Link
- http://www.debian.org/security/2009/dsa-1719Mailing List
FAQ
What is CVE-2008-4989?
CVE-2008-4989 is a vulnerability with a CVSS score of 5.9 (MEDIUM). The _gnutls_x509_verify_certificate function in lib/x509/verify.c in libgnutls in GnuTLS before 2.6.1 trusts certificate chains in which the last certificate is an arbitrary trusted, self-signed certi...
How severe is CVE-2008-4989?
CVE-2008-4989 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2008-4989?
Check the references section above for vendor advisories and patch information. Affected products include: Gnu Gnutls, Fedoraproject Fedora, Canonical Ubuntu Linux, Debian Debian Linux, Opensuse Opensuse.