Rule Category

SERVER-OTHER -- Snort has detected traffic exploiting vulnerabilities in a server in the network.

Alert Message

SERVER-OTHER GnuTLS x509 certificate validation policy bypass attempt

Rule Explanation

This event is generated when a crafted certificate is used to bypass policy validation in an application using GnuTLS. Impact: Attempted User Privilege Gain Details: Ease of Attack:

What To Look For

No information provided

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

Rule Groups

No rule groups

CVE

Rule Vulnerability

CVE Additional Information

CVE-2014-0092
lib/x509/verify.c in GnuTLS before 3.1.22 and 3.2.x before 3.2.12 does not properly handle unspecified errors when verifying X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers via a crafted certificate.
Details
SeverityMEDIUM Base Score5.8
Impact Score4.9 Exploit Score8.6
Confidentiality ImpactPARTIAL Integrity ImpactPARTIAL
Availability ImpactNONE Access Vector
AuthenticationNONE Ease of Access