Vulnerability Details CVE-2011-5094
Mozilla Network Security Services (NSS) 3.x, with certain settings of the SSL_ENABLE_RENEGOTIATION option, does not properly restrict client-initiated renegotiation within the SSL and TLS protocols, which might make it easier for remote attackers to cause a denial of service (CPU consumption) by performing many renegotiations within a single connection, a different vulnerability than CVE-2011-1473. NOTE: it can also be argued that it is the responsibility of server deployments, not a security library, to prevent or limit renegotiation when it is inappropriate within a specific environment
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 66.6%
CVSS Severity
CVSS v2 Score 4.3
References
- http://orchilles.com/2011/03/ssl-renegotiation-dos.html
- http://vincent.bernat.im/en/blog/2011-ssl-dos-mitigation.html
- http://www.educatedguesswork.org/2011/10/ssltls_and_computational_dos.html
- http://www.ietf.org/mail-archive/web/tls/current/msg07553.html
- http://www.ietf.org/mail-archive/web/tls/current/msg07564.html
- http://www.ietf.org/mail-archive/web/tls/current/msg07567.html
- http://www.ietf.org/mail-archive/web/tls/current/msg07576.html
- http://www.ietf.org/mail-archive/web/tls/current/msg07577.html
- http://www.openwall.com/lists/oss-security/2011/07/08/2
- https://bugzilla.redhat.com/show_bug.cgi?id=707065
- http://orchilles.com/2011/03/ssl-renegotiation-dos.html
- http://vincent.bernat.im/en/blog/2011-ssl-dos-mitigation.html
- http://www.educatedguesswork.org/2011/10/ssltls_and_computational_dos.html
- http://www.ietf.org/mail-archive/web/tls/current/msg07553.html
- http://www.ietf.org/mail-archive/web/tls/current/msg07564.html
- http://www.ietf.org/mail-archive/web/tls/current/msg07567.html
- http://www.ietf.org/mail-archive/web/tls/current/msg07576.html
- http://www.ietf.org/mail-archive/web/tls/current/msg07577.html
- http://www.openwall.com/lists/oss-security/2011/07/08/2
- https://bugzilla.redhat.com/show_bug.cgi?id=707065
Products affected by CVE-2011-5094
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cpe:2.3:a:mozilla:network_security_services:3.11.2
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cpe:2.3:a:mozilla:network_security_services:3.11.3
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cpe:2.3:a:mozilla:network_security_services:3.11.4
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cpe:2.3:a:mozilla:network_security_services:3.11.5
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cpe:2.3:a:mozilla:network_security_services:3.2
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cpe:2.3:a:mozilla:network_security_services:3.2.1
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cpe:2.3:a:mozilla:network_security_services:3.3
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cpe:2.3:a:mozilla:network_security_services:3.3.1
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cpe:2.3:a:mozilla:network_security_services:3.3.2
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cpe:2.3:a:mozilla:network_security_services:3.4
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cpe:2.3:a:mozilla:network_security_services:3.4.1
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cpe:2.3:a:mozilla:network_security_services:3.4.2
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cpe:2.3:a:mozilla:network_security_services:3.5
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cpe:2.3:a:mozilla:network_security_services:3.6
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cpe:2.3:a:mozilla:network_security_services:3.6.1
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cpe:2.3:a:mozilla:network_security_services:3.7
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cpe:2.3:a:mozilla:network_security_services:3.7.1
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cpe:2.3:a:mozilla:network_security_services:3.7.2
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cpe:2.3:a:mozilla:network_security_services:3.7.3
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cpe:2.3:a:mozilla:network_security_services:3.7.5
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cpe:2.3:a:mozilla:network_security_services:3.7.7
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cpe:2.3:a:mozilla:network_security_services:3.8
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cpe:2.3:a:mozilla:network_security_services:3.9