6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
9.6 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
0.024 Low
EPSS
Percentile
90.1%
The remote Debian 11 host has a package installed that is affected by multiple vulnerabilities as referenced in the dsa-4962 advisory.
LedgerSMB does not check the origin of HTML fragments merged into the browser’s DOM. By sending a specially crafted URL to an authenticated user, this flaw can be abused for remote code execution and information disclosure. (CVE-2021-3693)
LedgerSMB does not sufficiently HTML-encode error messages sent to the browser. By sending a specially crafted URL to an authenticated user, this flaw can be abused for remote code execution and information disclosure. (CVE-2021-3694)
LedgerSMB does not sufficiently guard against being wrapped by other sites, making it vulnerable to ‘clickjacking’. This allows an attacker to trick a targetted user to execute unintended actions.
(CVE-2021-3731)
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 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dsa-4962. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(152775);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2022/01/20");
script_cve_id("CVE-2021-3693", "CVE-2021-3694", "CVE-2021-3731");
script_name(english:"Debian DSA-4962-1 : ledgersmb - security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
script_set_attribute(attribute:"description", value:
"The remote Debian 11 host has a package installed that is affected by multiple vulnerabilities as referenced in the
dsa-4962 advisory.
- LedgerSMB does not check the origin of HTML fragments merged into the browser's DOM. By sending a
specially crafted URL to an authenticated user, this flaw can be abused for remote code execution and
information disclosure. (CVE-2021-3693)
- LedgerSMB does not sufficiently HTML-encode error messages sent to the browser. By sending a specially
crafted URL to an authenticated user, this flaw can be abused for remote code execution and information
disclosure. (CVE-2021-3694)
- LedgerSMB does not sufficiently guard against being wrapped by other sites, making it vulnerable to
'clickjacking'. This allows an attacker to trick a targetted user to execute unintended actions.
(CVE-2021-3731)
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://security-tracker.debian.org/tracker/source-package/ledgersmb");
script_set_attribute(attribute:"see_also", value:"https://www.debian.org/security/2021/dsa-4962");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-3693");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-3694");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-3731");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/ledgersmb");
script_set_attribute(attribute:"solution", value:
"Upgrade the ledgersmb packages.
For the stable distribution (bullseye), this problem has been fixed in version 1.6.9+ds-2+deb11u2.");
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:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-3694");
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:"2021/08/23");
script_set_attribute(attribute:"patch_publication_date", value:"2021/08/23");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/08/24");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ledgersmb");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Debian Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2021-2022 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('audit.inc');
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 release = get_kb_item('Host/Debian/release');
if ( isnull(release) ) audit(AUDIT_OS_NOT, 'Debian');
var release = chomp(release);
if (! preg(pattern:"^(11)\.[0-9]+", string:release)) audit(AUDIT_OS_NOT, 'Debian 11.0', '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': '11.0', 'prefix': 'ledgersmb', 'reference': '1.6.9+ds-2+deb11u2'}
];
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, 'ledgersmb');
}
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | ledgersmb | p-cpe:/a:debian:debian_linux:ledgersmb |
debian | debian_linux | 11.0 | cpe:/o:debian:debian_linux:11.0 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3693
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3694
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3731
packages.debian.org/source/bullseye/ledgersmb
security-tracker.debian.org/tracker/CVE-2021-3693
security-tracker.debian.org/tracker/CVE-2021-3694
security-tracker.debian.org/tracker/CVE-2021-3731
security-tracker.debian.org/tracker/source-package/ledgersmb
www.debian.org/security/2021/dsa-4962
6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
9.6 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
0.024 Low
EPSS
Percentile
90.1%