The version of Firefox ESR installed on the remote Windows host is prior to 68.4. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-02 advisory.
During the initialization of a new content process, a pointer offset can be manipulated leading to memory corruption and a potentially exploitable crash in the parent process. Note: this issue only occurs on Windows. Other operating systems are unaffected.
(CVE-2019-17015)
When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer incorrectly rewrites a @namespace rule. This could allow for injection into certain types of websites resulting in data exfiltration. (CVE-2019-17016)
Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. (CVE-2019-17017)
During the initialization of a new content process, a race condition occurs that can allow a content process to disclose heap addresses from the parent process.
Note: this issue only occurs on Windows. Other operating systems are unaffected. (CVE-2019-17021)
When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer does not escape < and > characters. Because the resulting string is pasted directly into the text node of the element this does not result in a direct injection into the webpage; however, if a webpage subsequently copies the node’s innerHTML, assigning it to another innerHTML, this would result in an XSS vulnerability. Two WYSIWYG editors were identified with this behavior, more may exist. (CVE-2019-17022)
Mozilla developers Jason Kratzer, Christian Holler, and Bob Clary reported memory safety bugs present in Firefox 71 and Firefox ESR 68.3. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2019-17024)
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Mozilla Foundation Security Advisory mfsa2020-02.
# The text itself is copyright (C) Mozilla Foundation.
include('compat.inc');
if (description)
{
script_id(132711);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/01");
script_cve_id(
"CVE-2019-17015",
"CVE-2019-17016",
"CVE-2019-17017",
"CVE-2019-17021",
"CVE-2019-17022",
"CVE-2019-17024"
);
script_xref(name:"MFSA", value:"2020-02");
script_name(english:"Mozilla Firefox ESR < 68.4 Multiple Vulnerabilities");
script_set_attribute(attribute:"synopsis", value:
"A web browser installed on the remote Windows host is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The version of Firefox ESR installed on the remote Windows host is prior to 68.4. It is, therefore, affected by multiple
vulnerabilities as referenced in the mfsa2020-02 advisory.
- During the initialization of a new content process, a
pointer offset can be manipulated leading to memory
corruption and a potentially exploitable crash in the
parent process. Note: this issue only occurs on
Windows. Other operating systems are unaffected.
(CVE-2019-17015)
- When pasting a <style> tag from the
clipboard into a rich text editor, the CSS sanitizer
incorrectly rewrites a @namespace rule. This could allow
for injection into certain types of websites resulting
in data exfiltration. (CVE-2019-17016)
- Due to a missing case handling object types, a type
confusion vulnerability could occur, resulting in a
crash. We presume that with enough effort that it could
be exploited to run arbitrary code. (CVE-2019-17017)
- During the initialization of a new content process, a
race condition occurs that can allow a content process
to disclose heap addresses from the parent process.
Note: this issue only occurs on Windows. Other
operating systems are unaffected. (CVE-2019-17021)
- When pasting a <style> tag from the
clipboard into a rich text editor, the CSS sanitizer
does not escape < and > characters. Because the
resulting string is pasted directly into the text node
of the element this does not result in a direct
injection into the webpage; however, if a webpage
subsequently copies the node's innerHTML, assigning it
to another innerHTML, this would result in an XSS
vulnerability. Two WYSIWYG editors were identified with
this behavior, more may exist. (CVE-2019-17022)
- Mozilla developers Jason Kratzer, Christian Holler, and
Bob Clary reported memory safety bugs present in Firefox
71 and Firefox ESR 68.3. Some of these bugs showed
evidence of memory corruption and we presume that with
enough effort some of these could have been exploited to
run arbitrary code. (CVE-2019-17024)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://www.mozilla.org/en-US/security/advisories/mfsa2020-02/");
script_set_attribute(attribute:"solution", value:
"Upgrade to Mozilla Firefox ESR version 68.4 or later.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-17024");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/01/07");
script_set_attribute(attribute:"patch_publication_date", value:"2020/01/07");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/01/08");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:mozilla:firefox_esr");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Windows");
script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("mozilla_org_installed.nasl");
script_require_keys("Mozilla/Firefox/Version");
exit(0);
}
include('mozilla_version.inc');
port = get_kb_item("SMB/transport");
if (!port) port = 445;
installs = get_kb_list("SMB/Mozilla/Firefox/*");
if (isnull(installs)) audit(AUDIT_NOT_INST, "Firefox");
mozilla_check_version(installs:installs, product:'firefox', esr:TRUE, fix:'68.4', min:'68.0.0', xss:TRUE, severity:SECURITY_WARNING);
Vendor | Product | Version | CPE |
---|---|---|---|
mozilla | firefox_esr | cpe:/a:mozilla:firefox_esr |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17015
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17016
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17017
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17021
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17022
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17024
www.mozilla.org/en-US/security/advisories/mfsa2020-02/