| Package | Affected versions | Patched versions |
|---|---|---|
| oniguruma | = 6.2.0 | |
| php | ≥ 5.6.0, < 5.6.31≥ 7.0.0, < 7.0.21≥ 7.1.0, < 7.1.7≤ 7.1.5 | 5.6.317.0.217.1.7 |
| ruby | ≤ 2.4.1 |
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 SIGSEGV occurs in left_adjust_char_head() during regular expression compilation. Invalid handling of reg->dmax in forward_search_range() could result in an invalid pointer dereference, normally as an immediate denial-of-service condition.
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