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Vulnerability DatabaseCVE-2021-44543

CVE-2021-44543: 
Privoxy vulnerability analysis and mitigation

Overview

An XSS (Cross-Site Scripting) vulnerability was discovered in Privoxy (CVE-2021-44543) which was identified and fixed in December 2021. The vulnerability specifically affected the cgierrorno_template() function when Privoxy was configured to serve its user manual (NVD, OSS Security).

Technical details

The vulnerability received a CVSS v3.1 Base Score of 6.1 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. This indicates that the vulnerability is network-accessible, requires low attack complexity, needs no privileges, but does require user interaction. The vulnerability was classified as CWE-79 (Improper Neutralization of Input During Web Page Generation) (NVD, Ubuntu).

Impact

The vulnerability could allow an attacker to execute cross-site scripting attacks when Privoxy is configured to serve its user manual. The impact assessment indicates low confidentiality and integrity impacts, with no impact on availability (NVD).

Mitigation and workarounds

The vulnerability was fixed in Privoxy version 3.0.33 by implementing proper encoding of the template name in the cgierrorno_template() function. Users are advised to upgrade to this version or later to mitigate the vulnerability (OSS Security).

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-debuginfo
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
  • privoxy
NoYesDec 23, 2021

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