GNU libextractor before 1.16 loads plugins from an untrusted search path specified by the LIBEXTRACTORPREFIX environment variable without proper privilege checks. A local attacker can exploit this by setting LIBEXTRACTORPREFIX to a directory containing a malicious plugin that executes arbitrary code with elevated privileges when loaded by a setuid or setgid program.

GNU libextractor before 1.15 contains a stack-based buffer overflow vulnerability in the processstaroffice function that sizes a variable-length stack array from attacker-controlled OLE2 stream data. Attackers can craft malicious StarOffice documents that allocate up to 4 MB on the stack, causing stack overflow and crashing any application extracting metadata from the document.

In GNU Libextractor 1.4, there is a NULL Pointer Dereference in the EXTRACTORnsfextractmethod function of plugins/nsfextractor.c.

In GNU Libextractor 1.4, there is an integer signedness error for the chunk size in the EXTRACTORnsfeextractmethod function in plugins/nsfeextractor.c, leading to an infinite loop for a crafted size.

In GNU Libextractor 1.4, there is a heap-based buffer overflow in the EXTRACTORpngextractmethod function in plugins/pngextractor.c, related to processiTXt and stndup.