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CVE-2021-20216

Date: March 25, 2021

A flaw was found in Privoxy in versions before 3.0.31. A memory leak that occurs when decompression fails unexpectedly may lead to a denial of service. The highest threat from this vulnerability is to system availability.

Severity Score

Related Resources (9)

https://security.gentoo.org/glsa/202107-16
https://bugzilla.redhat.com/show_bug.cgi?id=1923256
https://security.alpinelinux.org/vuln/CVE-2021-20216
https://www.privoxy.org/3.0.31/user-manual/whatsnew.html
https://security-tracker.debian.org/tracker/CVE-2021-20216
https://www.openwall.com/lists/oss-security/2021/01/31/2
https://nvd.nist.gov/vuln/detail/CVE-2021-20216
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-20216
https://www.mend.io/vulnerability-database/CVE-2021-20216

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption

CWE-400

Missing Release of Memory after Effective Lifetime

CWE-401

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

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