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High severity · published Nov 21, 2019
CVE-2019-19203
An issue was discovered in Oniguruma 6.x before 6.9.4_rc2
7.5
CVSS
4.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.1% · higher than 91% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
30; 31 · source: NVD
ON
Oniguruma · Oniguruma Project
6.0.0 before 6.9.4; 6.9.4 · source: NVD
Affected product
FE
Fedora
Fedoraproject
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-19203
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-19203
Exploit
https://github.com/ManhNDd/CVE-2019-19203
Exploit
https://github.com/kkos/oniguruma/issues/163
Release Notes
https://github.com/kkos/oniguruma/releases/tag/v6.9.4_rc2
Third Party Advisory
https://github.com/tarantula-team/CVE-2019-19203
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NO267PLHGYZSWX3XTRPKYBKD4J3YOU5V/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V3MBNW6Z4DOXSCNWGBLQ7OA3OGUJ44WL/
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