VulnerabilityModified
CVE-2017-9227
A stack out-of-bounds read occurs in mbc_enc_len() during regular expression searching.
CRITICAL 9.8EPSS 6.26%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 6.26% probability · 93th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- oniguruma project/oniguruma · php/php
- Source
- cve@mitre.org
References
- http://www.securityfocus.com/bid/100538Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:1296Third Party Advisory
- https://github.com/kkos/oniguruma/commit/9690d3ab1f9bcd2db8cbe1fe3ee4a5da606b8814Patch, Third Party Advisory
- https://github.com/kkos/oniguruma/issues/58Exploit, Issue Tracking, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/100538Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:1296Third Party Advisory
- https://github.com/kkos/oniguruma/commit/9690d3ab1f9bcd2db8cbe1fe3ee4a5da606b8814Patch, Third Party Advisory
- https://github.com/kkos/oniguruma/issues/58Exploit, Issue Tracking, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.