CVE-2012-4564 – libtiff: Missing return value check in ppm2tiff leading to heap-buffer overflow when reading a tiff file

https://notcve.org/view.php?id=CVE-2012-4564

ppm2tiff does not check the return value of the TIFFScanlineSize function, which allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted PPM image that triggers an integer overflow, a zero-memory allocation, and a heap-based buffer overflow. ppm2tiff no comprueba el valor devuelto por la función TIFFScanlineSize, lo que permite a atacantes remotos provocar una denegación de servicio (caída) y posiblemente ejecutar código arbitrario a través de una imagen PPM modificada que provoca un desbordamiento de entero, una asignación zero-memory, y un desbordamiento de búfer basado en memoria dinámica. • http://lists.opensuse.org/opensuse-updates/2013-01/msg00076.html http://rhn.redhat.com/errata/RHSA-2012-1590.html http://secunia.com/advisories/51133 http://www.debian.org/security/2012/dsa-2575 http://www.openwall.com/lists/oss-security/2012/11/02/3 http://www.openwall.com/lists/oss-security/2012/11/02/7 http://www.osvdb.org/86878 http://www.securityfocus.com/bid/56372 http://www.ubuntu.com/usn/USN-1631-1 https://bugzilla.redhat.com/show_bug.cgi?i • CWE-122: Heap-based Buffer Overflow •