CVE-2011-4461 Improper Input Validation in Jetty

What is CVE-2011-4461?

CVE-2011-4461 is a medium-severity denial of service vulnerability in n/a, published on 30 Dec 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Jetty 8.1.0.RC2 and earlier computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters.

Weakness: CWE-310

Which versions are affected by CVE-2011-4461?

2 open source packages ship an affected version, including org.eclipse.jetty:jetty-server. It affects 2 products.

Products include Mortbay Jetty, Oracle Sun Storage Common Array Manager.

How do I fix CVE-2011-4461?

Upgrade org.eclipse.jetty:jetty-server to 8.1.0.RC4 or later.

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-2011-4461 being exploited?

There is no known exploitation of CVE-2011-4461 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2009-4611 Improper input validation in Mort Bay Jetty High 7.5
• CVE-2009-5048 Cross-site scripting in n/a Medium 6.1
• CVE-2009-4609 Information disclosure in n/a Medium 5.0
• CVE-2009-1523 Directory traversal in Mort Bay Jetty Medium 5.0
• CVE-2005-3747 Mortbay Jetty Discloses JSP Source Code Medium 5.0

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-qxp4-27vx-xmm3.