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 match_at() during regular expression searching. A logical error involving order of validation and access in match_at() could result in an out-of-bounds read from a stack buffer.

References

http://www.securityfocus.com/bid/101244

https://access.redhat.com/errata/RHSA-2018:1296

https://github.com/kkos/oniguruma/commit/690313a061f7a4fa614ec5cc8368b4f2284e059b

https://github.com/kkos/oniguruma/issues/57

Details

Risk Information

CVSS v2

CVSS v3