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Vulnerability DatabaseCVE-2021-44542

CVE-2021-44542: 
Privoxy vulnerability analysis and mitigation

Overview

A memory leak vulnerability (CVE-2021-44542) was discovered in Privoxy when handling errors. The vulnerability was reported in December 2021 and affects Privoxy versions prior to 3.0.33. This security issue was identified and reported by Joshua Rogers from Opera, who also provided the fix (Openwall List).

Technical details

The vulnerability is classified as a memory leak issue (CWE-401: Missing Release of Memory after Effective Lifetime) that occurs specifically in the send_http_request() function when handling errors. The severity of this vulnerability has been assessed with a CVSS v3.1 Base Score of 7.5 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (NVD).

Impact

The memory leak vulnerability could lead to a denial of service condition by gradually consuming system memory, potentially affecting the availability of the Privoxy service (NVD).

Mitigation and workarounds

The vulnerability has been fixed in Privoxy version 3.0.33. Users are advised to upgrade to this version or later. The fix was implemented through a commit that addresses the memory leak in the send_http_request() function (Openwall List).

Additional resources

Source: This report was generated using AI

Related Privoxy vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2021-44542HIGH7.5
  • PrivoxyPrivoxy
  • privoxy
NoYesDec 23, 2021
CVE-2021-44541HIGH7.5
  • PrivoxyPrivoxy
  • privoxy
NoYesDec 23, 2021
CVE-2021-44540HIGH7.5
  • PrivoxyPrivoxy
  • privoxy
NoYesDec 23, 2021
CVE-2021-20209HIGH7.5
  • PrivoxyPrivoxy
  • privoxy
NoYesMay 25, 2021
CVE-2021-44543MEDIUM6.1
  • PrivoxyPrivoxy
  • cpe:2.3:a:privoxy:privoxy
NoYesDec 23, 2021

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