php: Integer underflow causing arbitrary null write in fread/gzread

Integer overflow in the fread function in ext/standard/file.c in PHP before 5.5.36 and 5.6.x before 5.6.22 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a large integer in the second argument...

Internet Bug Bounty: Integer underflow / arbitrary null write in fread/gzread

https://bugs.php.net/bug.php?id=72114 Integer underflow in the fread/gzread length parameter allows to write an arbitrary null byte on 64 bit platforms. This was identified with the help of ASAN and a custom fuzzer. gdb run gzread2.php Starting program: /home/operac/php/php-56/sapi/cli/php...

php -- multiple vulnerabilities

The PHP Group reports: Core: Fixed bug 72114 Integer underflow / arbitrary null write in fread/gzread. CVE-2016-5096 PHP 5.5/5.6 only Fixed bug 72135 Integer Overflow in phphtmlentities. CVE-2016-5094 PHP 5.5/5.6 only GD: Fixed bug 72227 imagescale out-of-bounds read. CVE-2013-7456 Intl: Fixed bu...