Vulnerability Report

CVE-2019-19203

Title: Oniguruma Project Oniguruma Memory Corruption

Memory Corruption

Proof Of Concept

PoC Available for CVE-2019-19203

CWE Category CWE-125
Published Date Nov 21, 2019
Modified Date Nov 21, 2024
Exploit Status Available
Score 7.5 CVSS v3.1
Exploit Probability (EPSS)
0.65%

Vulnerability Summary

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 buffer over-read.

Impacted Vendors

O
oniguruma_project 1

Reference Links

https://github.com/ManhNDd/CVE-2019-19203 https://github.com/kkos/oniguruma/issues/163 https://github.com/kkos/oniguruma/releases/tag/v6.9.4_rc2 https://github.com/tarantula-team/CVE-2019-19203 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NO267PLHGYZSWX3XTRPKYBKD4J3YOU5V/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V3MBNW6Z4DOXSCNWGBLQ7OA3OGUJ44WL/ https://github.com/ManhNDd/CVE-2019-19203 https://github.com/kkos/oniguruma/issues/163 https://github.com/kkos/oniguruma/releases/tag/v6.9.4_rc2 https://github.com/tarantula-team/CVE-2019-19203 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NO267PLHGYZSWX3XTRPKYBKD4J3YOU5V/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V3MBNW6Z4DOXSCNWGBLQ7OA3OGUJ44WL/
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
5.0
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:N/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2019-19203 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/ManhNDd/CVE-2019-19203
View Code
GitHub https://github.com/tarantula-team/CVE-2019-19203
View Code
MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.