CVE-2017-9227
9.8
CRITICAL
CVSS 3.1
EPSS 0.45%
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 stack out-of-bounds read occurs in mbc_enc_len() during regular expression searching. Invalid handling of reg->dmin in forward_search_range() could result in an invalid pointer dereference, as an out-of-bounds read from a stack buffer.
How to fix CVE-2017-9227
To remediate CVE-2017-9227, 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-2017-9227 being exploited?
Low — EPSS is 0.5%, 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 |