Out-of-bounds Read in Oniguruma Project
CVE-2019-19246
Oniguruma through 6.9.3, as used in PHP 7.3.x and other products, has a heap-based buffer over-read in str_lower_case_match in regexec.c.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.029 (87.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000
Affected products
- Oniguruma Project
- PHP
- Canonical Ubuntu Linux — versions 14.04
- Debian Linux — versions 8.0
- Fedoraproject Fedora — versions 31
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/kkos/oniguruma/commit/d3e402928b6eb3327f8f7d59a9edfa622fec557b (Patch, Third Party Advisory)
- bugs.php.net/bug.php (Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.debian.org/debian-lts-announce/2019/12/msg00002.html (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4460-1/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-19246?
- CVE-2019-19246 is a high-severity vulnerability in Oniguruma Project, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2019-11-25.
- How severe is CVE-2019-19246?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-19246 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.