CVE-2019-13225

NameCVE-2019-13225
DescriptionA NULL Pointer Dereference in match_at() in regexec.c in Oniguruma 6.9.2 allows attackers to potentially cause denial of service by providing a crafted regular expression. Oniguruma issues often affect Ruby, as well as common optional libraries for PHP and Rust.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium
Debian Bugs931878

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libonig (PTS)jessie5.9.5-3.2+deb8u1fixed
jessie (security)5.9.5-3.2+deb8u4fixed
stretch6.1.3-2vulnerable
buster6.9.1-1vulnerable
bullseye, sid6.9.4-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libonigsource(unstable)6.9.2-1low931878
libonigsourcejessie(not affected)

Notes

[buster] - libonig <no-dsa> (Minor issue)
[stretch] - libonig <no-dsa> (Minor issue)
[jessie] - libonig <not-affected> (vulnerable code was introduced later)
https://github.com/kkos/oniguruma/commit/c509265c5f6ae7264f7b8a8aae1cfa5fc59d108c

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