Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Oniguruma Project | Oniguruma | 6.2.0 |
| Php | Php | < 5.6.31 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/101244Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:1296Third Party Advisory
- https://github.com/kkos/oniguruma/commit/b4bf968ad52afe14e60a2dc8a95d3555c543353PatchThird Party Advisory
- https://github.com/kkos/oniguruma/commit/f015fbdd95f76438cd86366467bb2b39870dd7cPatchThird Party Advisory
- https://github.com/kkos/oniguruma/issues/55ExploitIssue TrackingThird Party Advisory
- http://www.securityfocus.com/bid/101244Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:1296Third Party Advisory
- https://github.com/kkos/oniguruma/commit/b4bf968ad52afe14e60a2dc8a95d3555c543353PatchThird Party Advisory
- https://github.com/kkos/oniguruma/commit/f015fbdd95f76438cd86366467bb2b39870dd7cPatchThird Party Advisory
- https://github.com/kkos/oniguruma/issues/55ExploitIssue TrackingThird Party Advisory
FAQ
What is CVE-2017-9226?
CVE-2017-9226 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 regul...
How severe is CVE-2017-9226?
CVE-2017-9226 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2017-9226?
Check the references section above for vendor advisories and patch information. Affected products include: Oniguruma Project Oniguruma, Php Php.