Out-of-bounds Read in Oniguruma Project
CVE-2019-19012
An integer overflow in the search_in_range function in regexec.c in Oniguruma 6.x before 6.9.4_rc2 leads to an out-of-bounds read, in which the offset of this read is under the control of an attacker. (This only affects the 32-bit compiled version). Remote attackers can cause a denial-of-service or information disclosure, or possibly have unspecified other impact, via a crafted regular expression.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.106 (95.8th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.105 · newest: 0.106 · change: +0.001
Affected products
- Oniguruma Project — versions 6.9.4
- Debian Linux — versions 8.0
- Fedoraproject Fedora — versions 30, 31
- Red Hat Enterprise Linux — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/kkos/oniguruma/issues/164 (Exploit, Patch, Third Party Advisory)
- github.com/kkos/oniguruma/releases/tag/v6.9.4_rc2 (Third Party Advisory)
- github.com/tarantula-team/CVE-2019-19012 (Exploit, 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, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- usn.ubuntu.com/4460-1/ (vendor-advisory)
Frequently asked questions
- What is CVE-2019-19012?
- CVE-2019-19012 is a critical-severity vulnerability in Oniguruma Project, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2019-11-17.
- How severe is CVE-2019-19012?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2019-19012 known to be exploited?
- 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.