CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
AI Score
Confidence
High
EPSS
Percentile
47.1%
The remote Debian 10 host has a package installed that is affected by a vulnerability as referenced in the dla-3652 advisory.
style
elements and one or more CSS at-rules. This could result in cross-site scripting or other undesired behavior when the malicious HTML and CSS are rendered in a browser. Sanitize 6.0.2 performs additional escaping of CSS in style
element content, which fixes this issue. Users who are unable to upgrade can prevent this issue by using a Sanitize config that doesn’t allow style
elements, using a Sanitize config that doesn’t allow CSS at-rules, or by manually escaping the character sequence </
as <\/
in style
element content. (CVE-2023-36823)Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-3652. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('compat.inc');
if (description)
{
script_id(185522);
script_version("1.0");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/14");
script_cve_id("CVE-2023-36823");
script_name(english:"Debian DLA-3652-1 : ruby-sanitize - LTS security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
script_set_attribute(attribute:"description", value:
"The remote Debian 10 host has a package installed that is affected by a vulnerability as referenced in the dla-3652
advisory.
- Sanitize is an allowlist-based HTML and CSS sanitizer. Using carefully crafted input, an attacker may be
able to sneak arbitrary HTML and CSS through Sanitize starting with version 3.0.0 and prior to version
6.0.2 when Sanitize is configured to use the built-in relaxed config or when using a custom config that
allows `style` elements and one or more CSS at-rules. This could result in cross-site scripting or other
undesired behavior when the malicious HTML and CSS are rendered in a browser. Sanitize 6.0.2 performs
additional escaping of CSS in `style` element content, which fixes this issue. Users who are unable to
upgrade can prevent this issue by using a Sanitize config that doesn't allow `style` elements, using a
Sanitize config that doesn't allow CSS at-rules, or by manually escaping the character sequence `</` as
`<\/` in `style` element content. (CVE-2023-36823)
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.debian.org/lts/security/2023/dla-3652");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-36823");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/ruby-sanitize");
script_set_attribute(attribute:"solution", value:
"Upgrade the ruby-sanitize packages.
For Debian 10 Buster, this problem has been fixed in version 4.6.6-2.1~deb10u2.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-36823");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2023/07/06");
script_set_attribute(attribute:"patch_publication_date", value:"2023/11/14");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/11/14");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby-sanitize");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Debian Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");
exit(0);
}
include('debian_package.inc');
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
var debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(10)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 10.0', 'Debian ' + debian_release);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Debian', cpu);
var pkgs = [
{'release': '10.0', 'prefix': 'ruby-sanitize', 'reference': '4.6.6-2.1~deb10u2'}
];
var flag = 0;
foreach package_array ( pkgs ) {
var _release = NULL;
var prefix = NULL;
var reference = NULL;
if (!empty_or_null(package_array['release'])) _release = package_array['release'];
if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (_release && prefix && reference) {
if (deb_check(release:_release, prefix:prefix, reference:reference)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : deb_report_get()
);
exit(0);
}
else
{
var tested = deb_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'ruby-sanitize');
}
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
AI Score
Confidence
High
EPSS
Percentile
47.1%