CVE-2021-20213: Null Pointer Dereference
First published: Mon Feb 15 2021(Updated: )
A flaw was found in Privoxy in versions before 3.0.29. Dereference of a NULL-pointer that could result in a crash if accept-intercepted-requests was enabled, Privoxy failed to get the request destination from the Host header and a memory allocation failed.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/Privoxy | <3.0.29 | 3.0.29 |
| Privoxy Privoxy | <3.0.29 |
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Reference Links
- https://www.privoxy.org/gitweb/?p=privoxy.git;a=commit;h=7530132349
- https://www.privoxy.org/3.0.29/user-manual/whatsnew.html
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1928741
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1928740
- https://bugzilla.redhat.com/show_bug.cgi?id=1928739
- https://security.gentoo.org/glsa/202107-16
Frequently Asked Questions
What is CVE-2021-20213?
CVE-2021-20213 is a vulnerability found in Privoxy versions before 3.0.29 that could result in a crash if certain conditions are met.
What is the severity of CVE-2021-20213?
The severity of CVE-2021-20213 is high, with a CVSS v3.1 base score of 7.5.
How does CVE-2021-20213 affect Privoxy?
CVE-2021-20213 affects Privoxy versions before 3.0.29 by causing a crash due to a NULL-pointer dereference.
What is the recommended fix for CVE-2021-20213?
To fix CVE-2021-20213, update Privoxy to version 3.0.29 or later, which addresses the vulnerability.
Where can I find more information about CVE-2021-20213?
You can find more information about CVE-2021-20213 in the references provided: [Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=1928739), [Gentoo GLSA](https://security.gentoo.org/glsa/202107-16), and [Privoxy User Manual](https://www.privoxy.org/3.0.29/user-manual/whatsnew.html).
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