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CVE-2019-20838

Good to know:

Date: June 15, 2020

libpcre in PCRE before 8.43 allows a subject buffer over-read in JIT when UTF is disabled, and \X or \R has more than one fixed quantifier, a related issue to CVE-2019-20454.

Language: C

Severity Score

7.5

Related Resources (13)

Url: http://seclists.org/fulldisclosure/2021/Feb/14

Url: https://access.redhat.com/security/cve/CVE-2019-20838

Url: https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E

Url: http://seclists.org/fulldisclosure/2020/Dec/32

Url: https://support.apple.com/kb/HT212147

Url: https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E

Url: https://bugs.gentoo.org/717920

Url: https://support.apple.com/kb/HT211931

Url: https://security-tracker.debian.org/tracker/CVE-2019-20838

Url: https://www.pcre.org/original/changelog.txt

Url: https://nvd.nist.gov/vuln/detail/CVE-2019-20838

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2019-20838

Url: https://www.mend.io/vulnerability-database/CVE-2019-20838

Severity Score

7.5

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

Top Fix

Upgrade Version

Upgrade to version 8.43

CVSS v3.1

Base Score:	7.5
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH

CVSS v2

Base Score:	4.3
Access Vector (AV):	NETWORK
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	PARTIAL
Additional information:

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