CVE-2021-20211: High severity privoxy vulnerability

Published Feb 15, 2021
·
Updated

A flaw was found in Privoxy in versions before 3.0.29. Memory leak when client tags are active can cause a system crash.

Other sources

Memory leak when client tags are active

Upstream Patch: https://www.privoxy.org/gitweb/?p=privoxy.git;a=commit;h=245e1cf32

External References:

https://www.privoxy.org/3.0.29/user-manual/whatsnew.html

Red Hat

Affected Software

2 affected componentsFixes available
redhat/Privoxy<3.0.29
3.0.29
Privoxy privoxy<3.0.29

Event History

Mar 25, 2021
CVE Published
via MITRE·06:57 PM
Data Sourced
via MITRE·06:57 PM
DescriptionWeakness

Frequently Asked Questions

1

What is CVE-2021-20211?

CVE-2021-20211 is a vulnerability found in Privoxy versions before 3.0.29 that can cause a system crash due to a memory leak when client tags are active.

2

How severe is CVE-2021-20211?

CVE-2021-20211 has a severity rating of 7.5, which is classified as high.

3

What software is affected by CVE-2021-20211?

Privoxy versions before 3.0.29 are affected by CVE-2021-20211.

4

How can I fix CVE-2021-20211?

To fix CVE-2021-20211, update Privoxy to version 3.0.29.

5

Where can I find more information about CVE-2021-20211?

You can find more information about CVE-2021-20211 in the references provided: [Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=1928733), [Gentoo GLSA](https://security.gentoo.org/glsa/202107-16), [Privoxy User Manual](https://www.privoxy.org/3.0.29/user-manual/whatsnew.html).

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203