[Secure-testing-team] Bug#863318: libonig: CVE-2017-9229

[Salvatore Bonaccorso]

Source: libonig
Version: 5.9.5-3.2
Severity: important
Tags: security upstream patch
Forwarded: https://github.com/kkos/oniguruma/issues/59

Hi,

the following vulnerability was published for libonig.

CVE-2017-9229[0]:
| 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.

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2017-9229
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9229
[1] https://github.com/kkos/oniguruma/issues/59
[2] https://github.com/kkos/oniguruma/commit/b690371bbf97794b4a1d3f295d4fb9a8b05d402d

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore