FreeBSD : freeradius -- insufficient CRL application vulnerability (379788f3-2900-11e5-a4a5-002590263bf5)

Medium Nessus Plugin ID 84697


The remote FreeBSD host is missing one or more security-related updates.


oCERT reports :

The FreeRADIUS server relies on OpenSSL to perform certificate validation, including Certificate Revocation List (CRL) checks. The FreeRADIUS usage of OpenSSL, in CRL application, limits the checks to leaf certificates, therefore not detecting revocation of intermediate CA certificates.

An unexpired client certificate, issued by an intermediate CA with a revoked certificate, is therefore accepted by FreeRADIUS.

Specifically sets the X509_V_FLAG_CRL_CHECK flag for leaf certificate CRL checks, but does not use X509_V_FLAG_CRL_CHECK_ALL for CRL checks on the complete trust chain.

The FreeRADIUS project advises that the recommended configuration is to use self-signed CAs for all EAP-TLS methods.


Update the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 84697

File Name: freebsd_pkg_379788f3290011e5a4a5002590263bf5.nasl

Version: $Revision: 2.4 $

Type: local

Published: 2015/07/14

Modified: 2018/01/31

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N


Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:freeradius2, p-cpe:/a:freebsd:freebsd:freeradius3, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 2015/07/13

Vulnerability Publication Date: 2015/06/22

Reference Information

CVE: CVE-2015-4680