GHSA-FHP4-PR5J-46M5 Muhammara has a NULL pointer dereference in LZWDecode filter when DecodeParms omits EarlyChange key

Summary A NULL pointer dereference vulnerability exists in PDFParser::CreateFilterForStream when processing a PDF stream with /Filter /LZWDecode and a /DecodeParms dictionary that does not contain the EarlyChange key. This causes an access violation 0xC0000005 and crashes the process. Affected...

xpdf: uninitialized Gfx::parser pointer dereference

The Gfx::getPos function in the PDF parser in xpdf before 3.02pl5, poppler 0.8.7 and possibly other versions up to 0.15.1, CUPS, kdegraphics, and possibly other products allows context-dependent attackers to cause a denial of service crash via unknown vectors that trigger an uninitialized pointer...