PT-2021-13843 · Privoxy+3 · Privoxy+3

Msiddiqu · CVE-2021-20212 · Published 2021-01-22 · Updated 2024-10-14

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions: Privoxy versions prior to 3.0.29

Description: A flaw in Privoxy causes a memory leak when multiple filters are executed and the last one is skipped due to a pcre error, leading to a system crash. This issue allows attackers to cause the system to crash.

Recommendations: For versions prior to 3.0.29, update to version 3.0.29 or later to resolve the issue. As a temporary workaround, consider restricting the use of multiple filters to minimize the risk of exploitation.

Fix

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

ALT-PU-2021-1116

ALT-PU-2024-13795

CVE-2021-20212

DLA-2548-1

USN-4886-1

Affected Products

Alt Linux

Linuxmint

Privoxy

Ubuntu

References · 31

• https://ubuntu.com/security/CVE-2021-20216 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4886-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-20272 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-35502 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-20211 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-20214 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-20212 · Security Note
• https://ubuntu.com/security/CVE-2021-20209 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-20273 · Vendor Advisory
• https://security.gentoo.org/glsa/202107-16 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-2548-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-20275 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-20212 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-20213 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-20212 · Security Note