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Vulnerabilities in the PHP language itself, and which PHP versions they affect.

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CVE-2017-9226

CRITICAL 9.8 CVSS 3.1
Published
May 24, 2017
Last modified
June 17, 2026
NVD status
Modified
Reported by
cve@mitre.org
Weakness
CWE-787
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 heap out-of-bounds write or read occurs in next_state_val() during regular expression compilation. Octal numbers larger than 0xff are not handled correctly in fetch_token() and fetch_token_in_cc(). A malformed regular expression containing an octal number in the form of '\700' would produce an invalid code point value larger than 0xff in next_state_val(), resulting in an out-of-bounds write memory corruption.

Affected products and versions

  • PHP — Before 5.6.31
  • PHP — From 7.0.0 (including) to 7.0.21 (excluding)
  • PHP — From 7.1.0 (including) to 7.1.7 (excluding)

References

  • www.securityfocus.com http://www.securityfocus.com/bid/101244 Third Party Advisory, VDB Entry
  • access.redhat.com https://access.redhat.com/errata/RHSA-2018:1296 Third Party Advisory
  • github.com https://github.com/kkos/oniguruma/commit/b4bf968ad52afe14e60a2dc8a95d3555c543353a Patch, Third Party Advisory
  • github.com https://github.com/kkos/oniguruma/commit/f015fbdd95f76438cd86366467bb2b39870dd7c6 Patch, Third Party Advisory
  • github.com https://github.com/kkos/oniguruma/issues/55 Exploit, Issue Tracking, Third Party Advisory
  • nvd.nist.gov Official NVD record