CVE-2019-20838
PCRE Buffer Over-read Vulnerability
Description
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.
INFO
Published Date :
June 15, 2020, 5:15 p.m.
Last Modified :
March 27, 2024, 4:05 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2019-20838 has a 15 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2019-20838
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2019-20838.
| URL | Resource |
|---|---|
| http://seclists.org/fulldisclosure/2020/Dec/32 | Mailing List Third Party Advisory |
| http://seclists.org/fulldisclosure/2021/Feb/14 | Mailing List Third Party Advisory |
| https://bugs.gentoo.org/717920 | Issue Tracking Patch Third Party Advisory VDB Entry |
| https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E | Mailing List Third Party Advisory |
| https://support.apple.com/kb/HT211931 | Vendor Advisory |
| https://support.apple.com/kb/HT212147 | Vendor Advisory |
| https://www.pcre.org/original/changelog.txt | Release Notes Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Dockerfile Roff Java
None
Dockerfile Python
None
asp-net-core csharp docker dockerfile javascript react webapi docker-compose
C# Dockerfile HTML JavaScript CSS
None
TypeScript
CNCF Live: Complexity vs Size vs Security
Python Shell
None
Go
None
Java Shell
None
Java
None
Java
Random late night exercises
Dockerfile Shell Python HCL
None
Dockerfile Python HCL
a test code repository
Dockerfile HCL
Scan a list of container images using Aqua Security's trivy CLI tool
Shell
demo stuff
Dockerfile Rust Shell HCL
A command line tool which provides an alternative interface to snyk test
snyk
Makefile Dockerfile Crystal Open Policy Agent
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-20838 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-20838 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Mar. 27, 2024
Action Type Old Value New Value Changed Reference Type https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* versions from (including) 8.2.0 up to (excluding) 8.2.12 *cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* versions from (including) 9.0.0 up to (excluding) 9.0.6 *cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E [No types assigned] Removed Reference MITRE https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E -
CPE Deprecation Remap by [email protected]
Sep. 22, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:apple:mac_os:*:*:*:*:*:*:*:* versions from (excluding) 11.0.1 OR *cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* versions from (excluding) 11.0.1 -
Modified Analysis by [email protected]
Mar. 15, 2021
Action Type Old Value New Value Changed Reference Type https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E Mailing List, Third Party Advisory -
CVE Modified by [email protected]
Feb. 25, 2021
Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E [No Types Assigned] -
Modified Analysis by [email protected]
Feb. 11, 2021
Action Type Old Value New Value Changed Reference Type http://seclists.org/fulldisclosure/2020/Dec/32 No Types Assigned http://seclists.org/fulldisclosure/2020/Dec/32 Mailing List, Third Party Advisory Changed Reference Type http://seclists.org/fulldisclosure/2021/Feb/14 No Types Assigned http://seclists.org/fulldisclosure/2021/Feb/14 Mailing List, Third Party Advisory Changed Reference Type https://bugs.gentoo.org/717920 Third Party Advisory, VDB Entry https://bugs.gentoo.org/717920 Issue Tracking, Patch, Third Party Advisory, VDB Entry Changed Reference Type https://support.apple.com/kb/HT211931 No Types Assigned https://support.apple.com/kb/HT211931 Vendor Advisory Changed Reference Type https://support.apple.com/kb/HT212147 No Types Assigned https://support.apple.com/kb/HT212147 Vendor Advisory Added CPE Configuration OR *cpe:2.3:o:apple:mac_os:*:*:*:*:*:*:*:* versions up to (excluding) 11.0.1 -
CVE Modified by [email protected]
Feb. 02, 2021
Action Type Old Value New Value Added Reference http://seclists.org/fulldisclosure/2021/Feb/14 [No Types Assigned] -
CVE Modified by [email protected]
Feb. 01, 2021
Action Type Old Value New Value Added Reference https://support.apple.com/kb/HT212147 [No Types Assigned] -
CVE Modified by [email protected]
Dec. 15, 2020
Action Type Old Value New Value Added Reference http://seclists.org/fulldisclosure/2020/Dec/32 [No Types Assigned] -
CVE Modified by [email protected]
Nov. 12, 2020
Action Type Old Value New Value Added Reference https://support.apple.com/kb/HT211931 [No Types Assigned] -
Reanalysis by [email protected]
Jun. 30, 2020
Action Type Old Value New Value Removed CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:N/A:P) Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P) Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H -
Initial Analysis by [email protected]
Jun. 25, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Changed Reference Type https://bugs.gentoo.org/717920 No Types Assigned https://bugs.gentoo.org/717920 Third Party Advisory, VDB Entry Changed Reference Type https://www.pcre.org/original/changelog.txt No Types Assigned https://www.pcre.org/original/changelog.txt Release Notes, Vendor Advisory Added CWE NIST CWE-125 Added CPE Configuration OR *cpe:2.3:a:pcre:pcre:*:*:*:*:*:*:*:* versions up to (excluding) 8.43
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-20838 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2019-20838
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.98 }} -0.05%
score
0.83893
percentile