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. 21, 2024, 6:31 a.m.

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.

Affected Products

The following products are affected by CVE-2021-44540 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.

ID Vendor Product Action
1 Privoxy privoxy
References to Advisories, Solutions, and Tools

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.

Updated: 4 months, 1 week ago
0 stars 0 fork 0 watcher
Born at : May 1, 2021, 11:58 p.m. This repo has been linked 9 different CVEs too.

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 af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://www.privoxy.org/3.0.33/user-manual/whatsnew.html%2C
    Added Reference https://www.privoxy.org/gitweb/?p=privoxy.git%3Ba=commit%3Bh=652b4b7cb0
  • 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
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
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

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability