CVE-2021-20213 describes a NULL-pointer dereference vulnerability in Privoxy versions prior to 3.0.29. This flaw can lead to a denial-of-service (crash) if the "accept-intercepted-requests" option is enabled, Privoxy fails to extract the request destination from the Host header, and a memory allocation fails. The vulnerability has a CVSS score of 7.5 (High), indicating it can be exploited remotely with low attack complexity, resulting in high availability impact. There is currently no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit or ExploitDB, and it has received minimal community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.0.29CPE matchmatch criteria | cpe:2.3:a:privoxy:privoxy:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.