CVE-2017-9228 – oniguruma: Out-of-bounds heap write in bitset_set_range()

https://notcve.org/view.php?id=CVE-2017-9228

An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A heap out-of-bounds write occurs in bitset_set_range() during regular expression compilation due to an uninitialized variable from an incorrect state transition. An incorrect state transition in parse_char_class() could create an execution path that leaves a critical local variable uninitialized until it's used as an index, resulting in an out-of-bounds write memory corruption. Se descubrió un problema en Oniguruma versión 6.2.0, tal como es usado en Oniguruma-mod en Ruby hasta la versión 2.4.1 y mbstring en PHP hasta la versión 7.1.5. Se produce una escritura fuera del límite de la pila en bitset_set_range() durante la compilación de expresiones regulares debido a una variable no inicializada de una transición de estado incorrecta. • https://access.redhat.com/errata/RHSA-2018:1296 https://github.com/kkos/oniguruma/commit/3b63d12038c8d8fc278e81c942fa9bec7c704c8b https://github.com/kkos/oniguruma/issues/60 https://access.redhat.com/security/cve/CVE-2017-9228 https://bugzilla.redhat.com/show_bug.cgi?id=1466740 • CWE-122: Heap-based Buffer Overflow CWE-787: Out-of-bounds Write •