Privoxy
CVE-2021-44543
MEDIUM
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Lifecycle Timeline
1DescriptionNVD
An XSS vulnerability was found in Privoxy which was fixed in cgi_error_no_template() by encode the template name when Privoxy is configured to servce the user-manual itself.
AnalysisAI
An XSS vulnerability was found in Privoxy which was fixed in cgi_error_no_template() by encode the template name when Privoxy is configured to servce the user-manual itself. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Technical ContextAI
This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. An XSS vulnerability was found in Privoxy which was fixed in cgi_error_no_template() by encode the template name when Privoxy is configured to servce the user-manual itself. Affected products include: Privoxy.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.
Privoxy before 3.0.21 does not properly handle Proxy-Authenticate and Proxy-Authorization headers in the client-server d
The remove_chunked_transfer_coding function in filters.c in Privoxy before 3.0.24 allows remote attackers to cause a den
The client_host function in parsers.c in Privoxy before 3.0.24 allows remote attackers to cause a denial of service (inv
Multiple use-after-free vulnerabilities in Privoxy before 3.0.22 allow remote attackers to have unspecified impact via v
A memory leak vulnerability was found in Privoxy when handling errors. Rated high severity (CVSS 7.5), this vulnerabilit
A vulnerability was found in Privoxy which was fixed in process_encrypted_request_headers() by freeing header memory whe
A vulnerability was found in Privoxy which was fixed in get_url_spec_param() by freeing memory of compiled pattern spec
A memory leak vulnerability was found in Privoxy before 3.0.29 in the show-status CGI handler when no action files are c
A flaw was found in Privoxy in versions before 3.0.31. Rated high severity (CVSS 7.5), this vulnerability is remotely ex
A flaw was found in Privoxy in versions before 3.0.31. Rated high severity (CVSS 7.5), this vulnerability is remotely ex
A flaw was found in Privoxy in versions before 3.0.29. Rated high severity (CVSS 7.5), this vulnerability is remotely ex
A flaw was found in Privoxy in versions before 3.0.29. Rated high severity (CVSS 7.5), this vulnerability is remotely ex
Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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