CVE-2021-20210 — Missing Release of Memory after Effective Lifetime in Privoxy

CWE-401 — Missing Release of Memory after Effective Lifetime CWE-787 — Out-of-bounds Write7 documents6 sources

Severity

7.5HIGHNVD

CISA7.8

EPSS

1.1%

top 21.69%

CISA KEV

Not in KEV

Exploit

No known exploits

Affected products

Privoxy Debian Privoxy

Timeline

PublishedMar 25

Latest updateOct 6

Description

A flaw was found in Privoxy in versions before 3.0.29. Memory leak in the show-status CGI handler when no filter files are configured can lead to a system crash.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages5 packages

▶debiandebian/privoxy< privoxy 3.0.29-1 (bookworm)

▶NVDprivoxy/privoxy< 3.0.29

▶Debianprivoxy/privoxy< 3.0.29-1+3

▶Ubuntuprivoxy/privoxy< 3.0.24-1ubuntu0.1+3

▶CVEListV5privoxy/privoxyPrivoxy 3.0.29

Patches

Patch: bugzilla.redhat.com ↗Patch: bugzilla.redhat.com ↗

🔴Vulnerability Details

GHSA

GHSA-j4jv-9rjv-h6jm: A flaw was found in Privoxy in versions before 3↗2022-05-24

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OSV

CVE-2021-20210: A flaw was found in Privoxy in versions before 3↗2021-03-25

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OSV

privoxy vulnerabilities↗2021-03-22

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📋Vendor Advisories

CISA

Linux Kernel Heap Out-of-Bounds Write Vulnerability↗2025-10-06

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Ubuntu

Privoxy vulnerabilities↗2021-03-22

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Debian

CVE-2021-20210: privoxy - A flaw was found in Privoxy in versions before 3.0.29. Memory leak in the show-s...↗2021

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