CVE-2011-5094
Description
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
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| mozilla | network_security_services | 3.2 | |
| mozilla | network_security_services | 3.2.1 | |
| mozilla | network_security_services | 3.3 | |
| mozilla | network_security_services | 3.3.1 | |
| mozilla | network_security_services | 3.3.2 | |
| mozilla | network_security_services | 3.4 | |
| mozilla | network_security_services | 3.4.1 | |
| mozilla | network_security_services | 3.4.2 | |
| mozilla | network_security_services | 3.5 | |
| mozilla | network_security_services | 3.6 | |
| mozilla | network_security_services | 3.6.1 | |
| mozilla | network_security_services | 3.7 | |
| mozilla | network_security_services | 3.7.1 | |
| mozilla | network_security_services | 3.7.2 | |
| mozilla | network_security_services | 3.7.3 | |
| mozilla | network_security_services | 3.7.5 | |
| mozilla | network_security_services | 3.7.7 | |
| mozilla | network_security_services | 3.8 | |
| mozilla | network_security_services | 3.9 | |
| mozilla | network_security_services | 3.11.2 | |
| mozilla | network_security_services | 3.11.3 | |
| mozilla | network_security_services | 3.11.4 | |
| mozilla | network_security_services | 3.11.5 | |
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
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.