| Name | CVE-2017-9225 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 863313 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libonig (PTS) | buster | 6.9.1-1 | fixed |
| bullseye | 6.9.6-1.1 | fixed |
| bookworm | 6.9.8-1 | fixed |
| sid, trixie | 6.9.9-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| libonig | source | wheezy | (not affected) | | | |
| libonig | source | jessie | (not affected) | | | |
| libonig | source | (unstable) | 6.1.3-2 | | | 863313 |
Notes
[jessie] - libonig <not-affected> (Vulnerable code introduced later)
[wheezy] - libonig <not-affected> (Vulnerable code introduced later)
https://github.com/kkos/oniguruma/commit/166a6c3999bf06b4de0ab4ce6b088a468cc4029f
https://github.com/kkos/oniguruma/issues/56