CVE-2019-19203

Public Exploit

Description

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 buffer over-read.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.66% Top 30%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/kkos/oniguruma/releases/tag/v6.9.4_rc2 release notes
https://github.com/kkos/oniguruma/issues/163 exploit third party advisory patch
https://github.com/ManhNDd/CVE-2019-19203 third party advisory exploit
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NO267PLHGYZSWX3XTRPKYBKD4J3YOU5V/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V3MBNW6Z4DOXSCNWGBLQ7OA3OGUJ44WL/ vendor advisory
https://github.com/tarantula-team/CVE-2019-19203 third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-19203?
CVE-2019-19203 has been scored as a high severity vulnerability.
How to fix CVE-2019-19203?
To fix CVE-2019-19203, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-19203 being actively exploited in the wild?
It is possible that CVE-2019-19203 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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