CVE-2020-6817
Adobe Bleach Regular Expression Denial of Service
Description
bleach.clean behavior parsing style attributes could result in a regular expression denial of service (ReDoS). Calls to bleach.clean with an allowed tag with an allowed style attribute are vulnerable to ReDoS. For example, bleach.clean(..., attributes={'a': ['style']}).
INFO
Published Date :
Feb. 16, 2023, 10:15 p.m.
Last Modified :
Nov. 21, 2024, 5:36 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2020-6817 has a 2 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-2020-6817.
| URL | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1623633 | Exploit Issue Tracking |
| https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmm | Vendor Advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1623633 | Exploit Issue Tracking |
| https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmm | 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
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-2020-6817 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-6817 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://bugzilla.mozilla.org/show_bug.cgi?id=1623633 Added Reference https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmm -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Feb. 28, 2023
Action Type Old Value New Value 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://bugzilla.mozilla.org/show_bug.cgi?id=1623633 No Types Assigned https://bugzilla.mozilla.org/show_bug.cgi?id=1623633 Exploit, Issue Tracking Changed Reference Type https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmm No Types Assigned https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmm Vendor Advisory Added CWE NIST CWE-1333 Added CPE Configuration OR *cpe:2.3:a:mozilla:bleach:*:*:*:*:*:*:*:* versions up to (excluding) 3.1.4
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-6817 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-2020-6817
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.08 }} 0.00%
score
0.34828
percentile