CVE-2011-0421 Null dereference in n/a
Attackers can cause a denial of service via NULL pointer dereference in PHP's Zip extension by processing empty ZIP archives.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-0421?
CVE-2011-0421 is a medium-severity vulnerability in Php Php, published on 20 Mar 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The _zip_name_locate function in zip_name_locate.c in the Zip extension in PHP before 5.3.6 does not properly handle a ZIPARCHIVE::FL_UNCHANGED argument, which might allow context-dependent attackers to cause a denial of service (NULL pointer dereference) via an empty ZIP archive that is processed with a (1) locateName or (2) statName operation.
Which versions are affected by CVE-2011-0421?
It affects 1 product.
Products include Php Php.
How do I fix CVE-2011-0421?
Upgrade to a fixed version.
Is CVE-2011-0421 being exploited?
There is no known exploitation of CVE-2011-0421 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Php Php
Sources
Also known as DEBIAN-CVE-2011-0421, GHSA-h3v6-hj58-cx74.