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.

The remote Ubuntu 18.04 LTS / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5826-1 advisory.

    Joshua Rogers discovered that Privoxy incorrectly handled memory allocation. An attacker could possibly     use this issue to cause a denial of service. (CVE-2021-44540)

    Artem Ivanov discovered that Privoxy incorrectly handled input validations. An

    attacker could possibly use this issue to perform cross-site scripting (XSS) attacks.

    (CVE-2021-44543)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SUSE15 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2022:10186-1 advisory.

  - A vulnerability was found in Privoxy which was fixed in get_url_spec_param() by freeing memory of compiled     pattern spec before bailing. (CVE-2021-44540)

  - A vulnerability was found in Privoxy which was fixed in process_encrypted_request_headers() by freeing     header memory when failing to get the request destination. (CVE-2021-44541)

  - A memory leak vulnerability was found in Privoxy when handling errors. (CVE-2021-44542)

  - 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. (CVE-2021-44543)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SUSE15 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:1646-1 advisory.

  - A vulnerability was found in Privoxy which was fixed in get_url_spec_param() by freeing memory of compiled     pattern spec before bailing. (CVE-2021-44540)

  - A vulnerability was found in Privoxy which was fixed in process_encrypted_request_headers() by freeing     header memory when failing to get the request destination. (CVE-2021-44541)

  - A memory leak vulnerability was found in Privoxy when handling errors. (CVE-2021-44542)

  - 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. (CVE-2021-44543)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 897e1962-5d5a-11ec-a3ed-040e3c3cf7e7 advisory.

  - 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. (CVE-2021-44543)

  - A vulnerability was found in Privoxy which was fixed in get_url_spec_param() by freeing memory of compiled     pattern spec before bailing. (CVE-2021-44540)

  - A vulnerability was found in Privoxy which was fixed in process_encrypted_request_headers() by freeing     header memory when failing to get the request destination. (CVE-2021-44541)

  - A memory leak vulnerability was found in Privoxy when handling errors. (CVE-2021-44542)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-2844 advisory.

  - 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. (CVE-2021-44543)

  - A vulnerability was found in Privoxy which was fixed in get_url_spec_param() by freeing memory of compiled     pattern spec before bailing. (CVE-2021-44540)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
170650	Ubuntu 18.04 LTS / 20.04 LTS : Privoxy vulnerabilities (USN-5826-1)	Nessus	Ubuntu Local Security Checks	medium
166900	openSUSE 15 Security Update : privoxy (openSUSE-SU-2022:10186-1)	Nessus	SuSE Local Security Checks	medium
156433	openSUSE 15 Security Update : privoxy (openSUSE-SU-2021:1646-1)	Nessus	SuSE Local Security Checks	medium
156079	FreeBSD : Privoxy -- Multiple vulnerabilities (memory leak, XSS) (897e1962-5d5a-11ec-a3ed-040e3c3cf7e7)	Nessus	FreeBSD Local Security Checks	medium
156039	Debian DLA-2844-1 : privoxy - LTS security update	Nessus	Debian Local Security Checks	medium

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CVE-2021-44543

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