CVE-2021-42836
GJSON Regular Expression Denial of Service (ReDoS)
Description
GJSON before 1.9.3 allows a ReDoS (regular expression denial of service) attack.
INFO
Published Date :
Oct. 22, 2021, 6:15 p.m.
Last Modified :
May 3, 2022, 4:04 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2021-42836 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2021-42836.
| URL | Resource |
|---|---|
| https://github.com/tidwall/gjson/commit/590010fdac311cc8990ef5c97448d4fec8f29944 | Patch Third Party Advisory |
| https://github.com/tidwall/gjson/commit/77a57fda87dca6d0d7d4627d512a630f89a91c96 | Patch Third Party Advisory |
| https://github.com/tidwall/gjson/compare/v1.9.2...v1.9.3 | Release Notes Third Party Advisory |
| https://github.com/tidwall/gjson/issues/236 | Exploit Issue Tracking Third Party Advisory |
| https://github.com/tidwall/gjson/issues/237 | Exploit Issue Tracking Patch Third Party 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).
List of RegEx DoS (ReDoS) CVEs and resources
security awesome redos regex dos regex-dos pentesting awesome-list regex-security
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-42836 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-42836 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 -
CWE Remap by [email protected]
May. 03, 2022
Action Type Old Value New Value Changed CWE CWE-697 CWE-400 -
Initial Analysis by [email protected]
Oct. 28, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://github.com/tidwall/gjson/commit/590010fdac311cc8990ef5c97448d4fec8f29944 No Types Assigned https://github.com/tidwall/gjson/commit/590010fdac311cc8990ef5c97448d4fec8f29944 Patch, Third Party Advisory Changed Reference Type https://github.com/tidwall/gjson/commit/77a57fda87dca6d0d7d4627d512a630f89a91c96 No Types Assigned https://github.com/tidwall/gjson/commit/77a57fda87dca6d0d7d4627d512a630f89a91c96 Patch, Third Party Advisory Changed Reference Type https://github.com/tidwall/gjson/compare/v1.9.2...v1.9.3 No Types Assigned https://github.com/tidwall/gjson/compare/v1.9.2...v1.9.3 Release Notes, Third Party Advisory Changed Reference Type https://github.com/tidwall/gjson/issues/236 No Types Assigned https://github.com/tidwall/gjson/issues/236 Exploit, Issue Tracking, Third Party Advisory Changed Reference Type https://github.com/tidwall/gjson/issues/237 No Types Assigned https://github.com/tidwall/gjson/issues/237 Exploit, Issue Tracking, Patch, Third Party Advisory Added CWE NIST CWE-697 Added CPE Configuration OR *cpe:2.3:a:gjson_project:gjson:*:*:*:*:*:*:*:* versions up to (excluding) 1.9.3
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-42836 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-2021-42836
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.32 }} 0.04%
score
0.70824
percentile