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 stack out-of-bounds write in onigenc_unicode_get_case_fold_codes_by_str() occurs during regular expression compilation. Code point 0xFFFFFFFF is not properly handled in unicode_unfold_key(). A malformed regular expression could result in 4 bytes being written off the end of a stack buffer of expand_case_fold_string() during the call to onigenc_unicode_get_case_fold_codes_by_str(), a typical stack buffer overflow.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Oniguruma Project | Oniguruma | 6.2.0 |
| Php | Php | <= 7.1.5 |
| Ruby-Lang | Ruby | <= 2.4.1 |
Related Weaknesses (CWE)
References
- https://github.com/kkos/oniguruma/commit/166a6c3999bf06b4de0ab4ce6b088a468cc4029PatchThird Party Advisory
- https://github.com/kkos/oniguruma/issues/56ExploitThird Party Advisory
- https://github.com/kkos/oniguruma/commit/166a6c3999bf06b4de0ab4ce6b088a468cc4029PatchThird Party Advisory
- https://github.com/kkos/oniguruma/issues/56ExploitThird Party Advisory
FAQ
What is CVE-2017-9225?
CVE-2017-9225 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 stack out-of-bounds write in onigenc_unicode_get_case_fold_codes_by_str(...
How severe is CVE-2017-9225?
CVE-2017-9225 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-2017-9225?
Check the references section above for vendor advisories and patch information. Affected products include: Oniguruma Project Oniguruma, Php Php, Ruby-Lang Ruby.