CVE-2021-44540
Privoxy Use-After-Free Vulnerability
Description
A vulnerability was found in Privoxy which was fixed in get_url_spec_param() by freeing memory of compiled pattern spec before bailing.
INFO
Published Date :
Dec. 23, 2021, 8:15 p.m.
Last Modified :
Nov. 7, 2023, 3:39 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2021-44540 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-2021-44540.
| URL | Resource |
|---|---|
| https://www.privoxy.org/3.0.33/user-manual/whatsnew.html%2C | |
| https://www.privoxy.org/gitweb/?p=privoxy.git%3Ba=commit%3Bh=652b4b7cb0 |
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).
A heavily edited version of Privoxy intended for fuzzing.
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-44540 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-44540 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 -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference Red Hat, Inc. https://www.privoxy.org/3.0.33/user-manual/whatsnew.html%2C [No types assigned] Added Reference Red Hat, Inc. https://www.privoxy.org/gitweb/?p=privoxy.git%3Ba=commit%3Bh=652b4b7cb0 [No types assigned] Removed Reference Red Hat, Inc. https://www.privoxy.org/3.0.33/user-manual/whatsnew.html, Removed Reference Red Hat, Inc. https://www.privoxy.org/gitweb/?p=privoxy.git;a=commit;h=652b4b7cb0 -
Initial Analysis by [email protected]
Jan. 06, 2022
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://www.privoxy.org/3.0.33/user-manual/whatsnew.html, No Types Assigned https://www.privoxy.org/3.0.33/user-manual/whatsnew.html, Broken Link, Vendor Advisory Changed Reference Type https://www.privoxy.org/gitweb/?p=privoxy.git;a=commit;h=652b4b7cb0 No Types Assigned https://www.privoxy.org/gitweb/?p=privoxy.git;a=commit;h=652b4b7cb0 Mailing List, Patch, Vendor Advisory Added CPE Configuration OR *cpe:2.3:a:privoxy:privoxy:*:*:*:*:*:*:*:* versions up to (excluding) 3.0.33
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-44540 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-2021-44540
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.12 }} 0.01%
score
0.46180
percentile