CVE-2017-9228

CRITICAL Year: 2017
CVSS v3 Score
9.8
Critical
CVSS v2 Score
7.5
High
Weakness Type
CWE-787
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Vulnerability Description

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.

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