CVE-2017-9227
9.8
CRITICAL · CVSS 3.1 · EPSS 6.3% (pctl 93)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 6.27% — more likely to be exploited than 93% of all CVEs |
| Weakness | CWE-125 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2017-05-24 |
| Last modified | 2026-06-17 |
Affected (2)
| Vendor | Product |
|---|---|
| oniguruma project | oniguruma |
| php | php |
References
- http://www.securityfocus.com/bid/100538
- https://access.redhat.com/errata/RHSA-2018:1296
- https://github.com/kkos/oniguruma/commit/9690d3ab1f9bcd2db8cbe1fe3ee4a5da606b8814
- https://github.com/kkos/oniguruma/issues/58
- http://www.securityfocus.com/bid/100538
- https://access.redhat.com/errata/RHSA-2018:1296
- https://github.com/kkos/oniguruma/commit/9690d3ab1f9bcd2db8cbe1fe3ee4a5da606b8814
- https://github.com/kkos/oniguruma/issues/58
→ the Explorer · watch your stack · NVD