A heap-based buffer overflow was found in jhead in version 3.06 in Get16u() in exif.c when processing a crafted file.

Jhead 3.06.0.1 allows attackers to execute arbitrary OS commands by placing them in a JPEG filename and then using the regeneration -rgt50 option.

jhead through 3.04 has a heap-based buffer over-read in processDQT in jpgqguess.c.

jhead through 3.04 has a heap-based buffer over-read in Get32s when called from ProcessGpsInfo in gpsinfo.c.

An integer underflow bug in the processEXIF function of the exif.c file of jhead 3.00 raises a heap-based buffer over-read when processing a malicious JPEG file, which may allow a remote attacker to cause a denial-of-service attack or unspecified other impact.