CVE-2017-9225: Buffer Overflow
First published: Wed May 24 2017(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Oracle Oniguruma | =6.2.0 | |
| PHP | <=7.1.5 | |
| Ruby | <=2.4.1 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2017-9225?
CVE-2017-9225 has been assigned a medium severity rating due to the potential for stack out-of-bounds write vulnerabilities.
How do I fix CVE-2017-9225?
To fix CVE-2017-9225, update Oniguruma to version 6.2.1 or later, and update PHP and Ruby to versions that no longer include the affected Oniguruma-mod.
Which versions are affected by CVE-2017-9225?
CVE-2017-9225 affects Oniguruma version 6.2.0, Ruby up to version 2.4.1, and PHP up to version 7.1.5.
What kind of vulnerability is CVE-2017-9225?
CVE-2017-9225 is a stack out-of-bounds write vulnerability occurring during regular expression compilation.
Who is impacted by CVE-2017-9225?
Users of Oniguruma 6.2.0, Ruby versions up to 2.4.1, and PHP versions up to 7.1.5 are impacted by CVE-2017-9225.
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