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MEDIUM · 5.8

CVE-2009-5138

GnuTLS before 2.7.6, when the GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT flag is not enabled, treats version 1 X.509 certificates as intermediate CAs, which allows remote attackers to bypass intended restrict...

Vulnerability Description

GnuTLS before 2.7.6, when the GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT flag is not enabled, treats version 1 X.509 certificates as intermediate CAs, which allows remote attackers to bypass intended restrictions by leveraging a X.509 V1 certificate from a trusted CA to issue new certificates, a different vulnerability than CVE-2014-1959.

CVSS Score

5.8

MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:N
Confidentiality
PARTIAL
Integrity
PARTIAL
Availability
NONE

Affected Products

VendorProductVersions
GnuGnutls<= 2.7.5

Related Weaknesses (CWE)

CWE-264

References

FAQ

What is CVE-2009-5138?

CVE-2009-5138 is a vulnerability with a CVSS score of 5.8 (MEDIUM). GnuTLS before 2.7.6, when the GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT flag is not enabled, treats version 1 X.509 certificates as intermediate CAs, which allows remote attackers to bypass intended restrict...

How severe is CVE-2009-5138?

CVE-2009-5138 has been rated MEDIUM with a CVSS base score of 5.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2009-5138?

Check the references section above for vendor advisories and patch information. Affected products include: Gnu Gnutls.