CVE-2017-9228
9.8
CRITICAL
CVSS 3.1
EPSS 0.58%
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.
How to fix CVE-2017-9228
To remediate CVE-2017-9228, upgrade the affected package to a fixed version below.
- —upgrade to 5.6.31-r0 or later
- —upgrade to 6.1.3-2 or later
Is CVE-2017-9228 being exploited?
Low — EPSS is 0.6%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 5.6.31-r0
- from 0, < 6.1.3-2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |