Vulnerability identifier: #VU50157

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20216

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
privoxy
Server applications / Web servers

Vendor: privoxy

Description
The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak during decompression. A remote attacker can send specially crafted request to the web server and perform denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

privoxy: 3.0 - 3.0.30

---

External links
http://seclists.org/oss-sec/2021/q1/91
http://www.privoxy.org/3.0.31/user-manual/whatsnew.html

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.