CVE-2020-5243
Apache User Agent Parser Core Regex Denial of Service Vulnerability
Description
uap-core before 0.7.3 is vulnerable to a denial of service attack when processing crafted User-Agent strings. Some regexes are vulnerable to regular expression denial of service (REDoS) due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to maliciously crafted long strings. This has been patched in uap-core 0.7.3.
INFO
Published Date :
Feb. 21, 2020, 12:15 a.m.
Last Modified :
Nov. 21, 2024, 5:33 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2020-5243 has a 6 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-2020-5243
.
URL | Resource |
---|---|
https://github.com/ua-parser/uap-core/commit/0afd61ed85396a3b5316f18bfd1edfaadf8e88e1 | Patch |
https://github.com/ua-parser/uap-core/security/advisories/GHSA-cmcx-xhr8-3w9p | Exploit Third Party Advisory |
https://github.com/ua-parser/uap-core/commit/0afd61ed85396a3b5316f18bfd1edfaadf8e88e1 | Patch |
https://github.com/ua-parser/uap-core/security/advisories/GHSA-cmcx-xhr8-3w9p | Exploit 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).
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JavaScript
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Your search did not match any code However we found 9k pull requests and 4k issues that matched your search query. Alternatively try one of the tips below. Within a repository: repo:github/linguist Across several: repo:github/linguist OR repo:github/fetch Note that we don't currently support regular expressions in the repo or org qualifiers. For m
production plugin
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Python JavaScript C#
List of RegEx DoS (ReDoS) CVEs and resources
security awesome redos regex dos regex-dos pentesting awesome-list regex-security
Find regular expressions which are vulnerable to ReDoS (Regular Expression Denial of Service)
Python JavaScript C#
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-5243
vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-5243
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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/ua-parser/uap-core/commit/0afd61ed85396a3b5316f18bfd1edfaadf8e88e1 Added Reference https://github.com/ua-parser/uap-core/security/advisories/GHSA-cmcx-xhr8-3w9p -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Feb. 08, 2024
Action Type Old Value New Value Changed Reference Type https://github.com/ua-parser/uap-core/commit/0afd61ed85396a3b5316f18bfd1edfaadf8e88e1 Patch, Third Party Advisory https://github.com/ua-parser/uap-core/commit/0afd61ed85396a3b5316f18bfd1edfaadf8e88e1 Patch Removed CWE NIST CWE-400 Added CWE NIST CWE-1333 Changed CPE Configuration OR *cpe:2.3:a:uap-core_project:uap-core:*:*:*:*:*:*:*:* versions up to (excluding) 0.7.3 OR *cpe:2.3:a:uap-core_project:uap-core:*:*:*:*:*:node.js:*:* versions up to (excluding) 0.7.3 -
Initial Analysis by [email protected]
Feb. 25, 2020
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/ua-parser/uap-core/commit/0afd61ed85396a3b5316f18bfd1edfaadf8e88e1 No Types Assigned https://github.com/ua-parser/uap-core/commit/0afd61ed85396a3b5316f18bfd1edfaadf8e88e1 Patch, Third Party Advisory Changed Reference Type https://github.com/ua-parser/uap-core/security/advisories/GHSA-cmcx-xhr8-3w9p No Types Assigned https://github.com/ua-parser/uap-core/security/advisories/GHSA-cmcx-xhr8-3w9p Exploit, Third Party Advisory Added CWE NIST CWE-400 Added CPE Configuration OR *cpe:2.3:a:uap-core_project:uap-core:*:*:*:*:*:*:*:* versions up to (excluding) 0.7.3
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-5243
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-2020-5243
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.78 }} -0.67%
score
0.71396
percentile