CVE-2011-5094 Denial of service in n/a
Remote attackers can cause CPU exhaustion via excessive SSL/TLS renegotiations in NSS when specific options are enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2011-5094?
CVE-2011-5094 is a medium-severity denial of service vulnerability in Mozilla Network Security Services, published on 16 Jun 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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
Which versions are affected by CVE-2011-5094?
It affects 1 product.
Products include Mozilla Network Security Services.
How do I fix CVE-2011-5094?
No fix has been published for CVE-2011-5094 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2011-5094 being exploited?
There is no known exploitation of CVE-2011-5094 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Network Security Services
Sources
Also known as GHSA-m896-wg3p-7ffv.