VulnerabilityModified
CVE-2011-2701
The ocsp_check function in rlm_eap_tls.c in FreeRADIUS 2.1.11, when OCSP is enabled, does not properly parse replies from OCSP responders, which allows remote attackers to bypass authentication by using the EAP-TLS protocol with a revoked X.509 client…
MEDIUM 5.8EPSS 1.85%
Does this matter?
Lower severity and a low EPSS score (1.85%). Track it; it rarely justifies an emergency change on its own.
Description
The ocsp_check function in rlm_eap_tls.c in FreeRADIUS 2.1.11, when OCSP is enabled, does not properly parse replies from OCSP responders, which allows remote attackers to bypass authentication by using the EAP-TLS protocol with a revoked X.509 client certificate.
- CVSS 2.0
- 5.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:N
- EPSS
- 1.85% probability · 78th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- freeradius/freeradius
- Source
- secalert@redhat.com
References
- http://secunia.com/advisories/45425Vendor Advisory
- http://securityreason.com/securityalert/8325
- http://securitytracker.com/id?1025833
- http://www.openwall.com/lists/oss-security/2011/07/15/6
- http://www.openwall.com/lists/oss-security/2011/07/18/2
- http://www.openwall.com/lists/oss-security/2011/07/20/9
- http://www.securityfocus.com/archive/1/518974/100/0/threaded
- http://www.securityfocus.com/bid/48880
- https://bugzilla.redhat.com/show_bug.cgi?id=724815Patch
- https://exchange.xforce.ibmcloud.com/vulnerabilities/68782
- https://www.dfn-cert.de/informationen/Sicherheitsbulletins/dsb-2011-01.html
- http://secunia.com/advisories/45425Vendor Advisory
- http://securityreason.com/securityalert/8325
- http://securitytracker.com/id?1025833
- http://www.openwall.com/lists/oss-security/2011/07/15/6
- http://www.openwall.com/lists/oss-security/2011/07/18/2
- http://www.openwall.com/lists/oss-security/2011/07/20/9
- http://www.securityfocus.com/archive/1/518974/100/0/threaded
- http://www.securityfocus.com/bid/48880
- https://bugzilla.redhat.com/show_bug.cgi?id=724815Patch
- https://exchange.xforce.ibmcloud.com/vulnerabilities/68782
- https://www.dfn-cert.de/informationen/Sicherheitsbulletins/dsb-2011-01.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.