Heap-based buffer overflow in zgv before 5.8 and xzgv before 0.8 might allow user-assisted attackers to execute arbitrary code via a JPEG image with more than 3 output components, such as a CMYK or YCCK color space, which causes less memory to be allocated than required.

Multiple integer overflows in (1) readbmp.c, (2) readgif.c, (3) readgif.c, (4) readmrf.c, (5) readpcx.c, (6) readpng.c,(7) readpnm.c, (8) readprf.c, (9) readtiff.c, (10) readxbm.c, (11) readxpm.c in zgv 5.8 allow remote attackers to execute arbitrary code via certain image headers that cause calculations to be overflowed and small buffers to be allocated, leading to buffer overflows. NOTE: CVE-2004-0994 and CVE-2004-1095 identify sets of bugs that only partially overlap, despite having the same developer. Therefore, they should be regarded as distinct.

Multiple integer overflows in xzgv 0.8 and earlier allow remote attackers to execute arbitrary code via images with large width and height values, which trigger a heap-based buffer overflow, as demonstrated in the read_prf_file function in readprf.c. NOTE: CVE-2004-0994 and CVE-2004-1095 identify sets of bugs that only partially overlap, despite having the same developer. Therefore, they should be regarded as distinct.

zgv 5.5.3 allows remote attackers to cause a denial of service (application crash via segmentation fault) via crafted multiple-image (animated) GIF images.