Out-of-bounds Read in Oniguruma_project Oniguruma
CVE-2019-19203
An issue was discovered in Oniguruma 6.x before 6.9.4_rc2. In the function gb18030_mbc_enc_len in file gb18030.c, a UChar pointer is dereferenced without checking if it passed the end of the matched string. This leads to a heap-based buffe…
Vulnerability class: Buffer Overflow
EPSS: 0.041 (89.5th percentile) — read the EPSS interpretation.
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.
Affected products
- Oniguruma_project Oniguruma — versions 6.9.4
- Fedoraproject Fedora — versions 30, 31
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_MISC, Release Notes)
- cve@mitre.org (Exploit, Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2019-19203?
- CVE-2019-19203 is a high-severity vulnerability in Oniguruma_project Oniguruma, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2019-11-21.
- How severe is CVE-2019-19203?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-19203 known to be exploited?
- 12 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.