PT-2021-13843

CVE-2021-20212

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Published

2021-01-22

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Updated

2026-10-31

Description by

CVSS 2.0
7.8
High
MetricsAV: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.
Exploitability
Fix
Impacts
Researchers
Vendors
Affected products
Related identifiers
ALT-PU-2021-1116
ALT-PU-2024-13795
CLEANSTART-2023-CL35655
DLA-2548-1
USN-4886-1
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