CVE-2009-5138 describes a vulnerability in GnuTLS versions prior to 2.7.6, where the software incorrectly treats version 1 X.509 certificates as intermediate Certificate Authorities (CAs) if the GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT flag is not enabled. This misinterpretation allows remote attackers to bypass security restrictions by using a trusted X.509 V1 certificate to issue new, unauthorized certificates. The vulnerability has a CVSS score of 5.8, indicating a medium severity with network-based attacks requiring medium complexity to achieve partial confidentiality and integrity impacts. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 2.7.5CPE matchmatch criteria | cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* | ||
2.7.0CPE matchmatch criteria | cpe:2.3:a:gnu:gnutls:2.7.0:*:*:*:*:*:*:* | ||
2.7.1CPE matchmatch criteria | cpe:2.3:a:gnu:gnutls:2.7.1:*:*:*:*:*:*:* | ||
2.7.2CPE matchmatch criteria | cpe:2.3:a:gnu:gnutls:2.7.2:*:*:*:*:*:*:* | ||
2.7.3CPE matchmatch criteria | cpe:2.3:a:gnu:gnutls:2.7.3:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:M/Au:N/C:P/I:P/A:N
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The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.