PHP Zip Extension Denial of Service Vulnerability

CVE-2011-0421 · MEDIUM Severity

AV:N/AC:M/AU:N/C:N/I:N/A:P

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.

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