Ubuntu.comUB:CVE-2011-5094CVE-2011-5094
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
0.007 Low
EPSS
Percentile
80.5%
DISPUTED 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.
Bugs
Notes
| Author | Note |
|---|---|
| mdeslaur | this CVE is specific to nss, openssl is in CVE-2011-1473 Upstream disputes this. Ignoring. |
References
orchilles.com/2011/03/ssl-renegotiation-dos.html
vincent.bernat.im/en/blog/2011-ssl-dos-mitigation.html
www.educatedguesswork.org/2011/10/ssltls_and_computational_dos.html
www.ietf.org/mail-archive/web/tls/current/msg07553.html
www.ietf.org/mail-archive/web/tls/current/msg07564.html
www.ietf.org/mail-archive/web/tls/current/msg07567.html
www.ietf.org/mail-archive/web/tls/current/msg07576.html
www.ietf.org/mail-archive/web/tls/current/msg07577.html
www.openwall.com/lists/oss-security/2011/07/08/2
www.thc.org/thc-ssl-dos/
bugzilla.redhat.com/show_bug.cgi?id=707065
launchpad.net/bugs/cve/CVE-2011-5094
nvd.nist.gov/vuln/detail/CVE-2011-5094
security-tracker.debian.org/tracker/CVE-2011-5094
www.cve.org/CVERecord?id=CVE-2011-5094
Related
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
0.007 Low
EPSS
Percentile
80.5%