CVE-2012-2739 Denial of service in n/a
Attackers can cause denial of service via CPU exhaustion by triggering predictable hash collisions in Java hash tables.
- 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-2012-2739?
CVE-2012-2739 is a medium-severity denial of service vulnerability in Oracle Jdk, published on 28 Nov 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Oracle Java SE before 7 Update 6, and OpenJDK 7 before 7u6 build 12 and 8 before build 39, computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table.
Weakness: CWE-310
Which versions are affected by CVE-2012-2739?
It affects 3 products.
Products include Oracle Jdk, Oracle Jre, Oracle Openjdk.
How do I fix CVE-2012-2739?
No fix has been published for CVE-2012-2739 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-2012-2739 being exploited?
There is no known exploitation of CVE-2012-2739 in the wild and no public exploit code.
Other vulnerabilities in Oracle Jdk
Sources
Also known as GHSA-g4rj-4w28-44fg.