Vulnerability Report

CVE-2019-20838

Title: Splunk Universal Forwarder Memory Corruption

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2019-20838.

CWE Category CWE-125

Published Date Jun 15, 2020

Modified Date Nov 21, 2024

Exploit Status Not Found

Score 7.5 CVSS v3.1

Exploit Probability (EPSS)

2.77%

Vulnerability Summary

CVE-2019-20838: 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.

Impacted Vendors

pcre 1

perl 1

splunk 1

Reference Links

http://seclists.org/fulldisclosure/2020/Dec/32 http://seclists.org/fulldisclosure/2021/Feb/14 https://bugs.gentoo.org/717920 https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E https://support.apple.com/kb/HT211931 https://support.apple.com/kb/HT212147 https://www.pcre.org/original/changelog.txt http://seclists.org/fulldisclosure/2020/Dec/32 http://seclists.org/fulldisclosure/2021/Feb/14 https://bugs.gentoo.org/717920 https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E https://support.apple.com/kb/HT211931 https://support.apple.com/kb/HT212147 https://www.pcre.org/original/changelog.txt

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

4.3

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:M/Au:N/C:N/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2019-20838 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

November 21, 2024 MODIFIED

Vulnerability data or affected products updated.

June 15, 2020 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.