CVE-2017-9227

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.

• CWE-125

• 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

Published

May 24, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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