CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
88.1%
The remote Debian 10 / 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5077 advisory.
A code execution vulnerability exists in the dwgCompressor::decompress18() functionality of LibreCad libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dwg file can lead to an out-of-bounds write. An attacker can provide a malicious file to trigger this vulnerability. (CVE-2021-21898)
A code execution vulnerability exists in the dwgCompressor::copyCompBytes21 functionality of LibreCad libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dwg file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability. (CVE-2021-21899)
A code execution vulnerability exists in the dxfRW::processLType() functionality of LibreCad libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dxf file can lead to a use-after-free vulnerability. An attacker can provide a malicious file to trigger this vulnerability. (CVE-2021-21900)
A buffer overflow vulnerability in CDataMoji of the jwwlib component of LibreCAD 2.2.0-rc3 and older allows an attacker to achieve Remote Code Execution using a crafted JWW document. (CVE-2021-45341)
A buffer overflow vulnerability in CDataList of the jwwlib component of LibreCAD 2.2.0-rc3 and older allows an attacker to achieve Remote Code Execution using a crafted JWW document. (CVE-2021-45342)
In LibreCAD 2.2.0, a NULL pointer dereference in the HATCH handling of libdxfrw allows an attacker to crash the application using a crafted DXF document. (CVE-2021-45343)
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-5077. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(158089);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/09");
script_cve_id(
"CVE-2021-21898",
"CVE-2021-21899",
"CVE-2021-21900",
"CVE-2021-45341",
"CVE-2021-45342",
"CVE-2021-45343"
);
script_name(english:"Debian DSA-5077-1 : librecad - 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 10 / 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dsa-5077 advisory.
- A code execution vulnerability exists in the dwgCompressor::decompress18() functionality of LibreCad
libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dwg file can lead to an out-of-bounds write. An
attacker can provide a malicious file to trigger this vulnerability. (CVE-2021-21898)
- A code execution vulnerability exists in the dwgCompressor::copyCompBytes21 functionality of LibreCad
libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dwg file can lead to a heap buffer overflow. An
attacker can provide a malicious file to trigger this vulnerability. (CVE-2021-21899)
- A code execution vulnerability exists in the dxfRW::processLType() functionality of LibreCad libdxfrw
2.2.0-rc2-19-ge02f3580. A specially-crafted .dxf file can lead to a use-after-free vulnerability. An
attacker can provide a malicious file to trigger this vulnerability. (CVE-2021-21900)
- A buffer overflow vulnerability in CDataMoji of the jwwlib component of LibreCAD 2.2.0-rc3 and older
allows an attacker to achieve Remote Code Execution using a crafted JWW document. (CVE-2021-45341)
- A buffer overflow vulnerability in CDataList of the jwwlib component of LibreCAD 2.2.0-rc3 and older
allows an attacker to achieve Remote Code Execution using a crafted JWW document. (CVE-2021-45342)
- In LibreCAD 2.2.0, a NULL pointer dereference in the HATCH handling of libdxfrw allows an attacker to
crash the application using a crafted DXF document. (CVE-2021-45343)
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://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1004518");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/librecad");
script_set_attribute(attribute:"see_also", value:"https://www.debian.org/security/2022/dsa-5077");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-21898");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-21899");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-21900");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-45341");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-45342");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-45343");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/librecad");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/librecad");
script_set_attribute(attribute:"solution", value:
"Upgrade the librecad packages.
For the stable distribution (bullseye), these problems have been fixed in version 2.1.3-1.3+deb11u1.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
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-2021-45341");
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:"2021/11/19");
script_set_attribute(attribute:"patch_publication_date", value:"2022/02/15");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/02/16");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:librecad");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:librecad-data");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
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) 2022-2023 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('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:"^(10)\.[0-9]+|^(11)\.[0-9]+", string:release)) audit(AUDIT_OS_NOT, 'Debian 10.0 / 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': '10.0', 'prefix': 'librecad', 'reference': '2.1.3-1.2+deb10u1'},
{'release': '10.0', 'prefix': 'librecad-data', 'reference': '2.1.3-1.2+deb10u1'},
{'release': '11.0', 'prefix': 'librecad', 'reference': '2.1.3-1.3+deb11u1'},
{'release': '11.0', 'prefix': 'librecad-data', 'reference': '2.1.3-1.3+deb11u1'}
];
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_HOLE,
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, 'librecad / librecad-data');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21898
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21899
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21900
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45341
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45342
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45343
bugs.debian.org/cgi-bin/bugreport.cgi?bug=1004518
packages.debian.org/source/bullseye/librecad
packages.debian.org/source/buster/librecad
security-tracker.debian.org/tracker/CVE-2021-21898
security-tracker.debian.org/tracker/CVE-2021-21899
security-tracker.debian.org/tracker/CVE-2021-21900
security-tracker.debian.org/tracker/CVE-2021-45341
security-tracker.debian.org/tracker/CVE-2021-45342
security-tracker.debian.org/tracker/CVE-2021-45343
security-tracker.debian.org/tracker/source-package/librecad
www.debian.org/security/2022/dsa-5077
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
88.1%