CVE-2012-5533 Denial of service in n/a
Remote attackers can cause a denial of service in lighttpd via an infinite loop triggered by a malformed HTTP header.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2012-5533?
CVE-2012-5533 is a medium-severity denial of service vulnerability in n/a, published on 24 Nov 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The http_request_split_value function in request.c in lighttpd before 1.4.32 allows remote attackers to cause a denial of service (infinite loop) via a request with a header containing an empty token, as demonstrated using the "Connection: TE,,Keep-Alive" header.
Weakness: CWE-399
Which versions are affected by CVE-2012-5533?
It affects 1 product.
Products include Lighttpd Lighttpd.
How do I fix CVE-2012-5533?
Upgrade to a fixed version.
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-2012-5533 being exploited?
There is no known exploitation of CVE-2012-5533 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2012-5533, GHSA-v87j-h4pq-fh3j.