“FreeBSD-SA-06:21.gzip”(FreeBSD Security Advisories),
II. Problem Description対処済み…
Multiple programming errors have been found in gzip which can be triggered when gzip is decompressing files. These errors include insufficient bounds checks in buffer use, a NULL pointer dereference, and a potential infinite loop.
III. Impact
The insufficient bounds checks in buffer use can cause gzip to crash, and may permit the execution of arbitrary code. The NULL pointer deference can cause gzip to crash. The infinite loop can cause a Denial-of-Service situation where gzip uses all available CPU time.