The remote host is affected by the vulnerability described in GLSA-202305-26 (LibreCAD: Multiple Vulnerabilities)
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 these issues but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# @NOAGENT@
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 202305-26.
#
# The advisory text is Copyright (C) 2001-2021 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#
include('compat.inc');
if (description)
{
script_id(176194);
script_version("1.0");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/05/21");
script_cve_id(
"CVE-2021-21898",
"CVE-2021-21899",
"CVE-2021-21900",
"CVE-2021-45341",
"CVE-2021-45342",
"CVE-2021-45343"
);
script_name(english:"GLSA-202305-26 : LibreCAD: Multiple Vulnerabilities");
script_set_attribute(attribute:"synopsis", value:
"");
script_set_attribute(attribute:"description", value:
"The remote host is affected by the vulnerability described in GLSA-202305-26 (LibreCAD: Multiple Vulnerabilities)
- 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 these issues but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://security.gentoo.org/glsa/202305-26");
script_set_attribute(attribute:"see_also", value:"https://bugs.gentoo.org/show_bug.cgi?id=825362");
script_set_attribute(attribute:"see_also", value:"https://bugs.gentoo.org/show_bug.cgi?id=832210");
script_set_attribute(attribute:"solution", value:
"All LibreCAD users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose >=media-gfx/librecad-2.1.3-r7");
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:"2023/05/21");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/05/21");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:librecad");
script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Gentoo 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/Gentoo/release", "Host/Gentoo/qpkg-list");
exit(0);
}
include('qpkg.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item('Host/Gentoo/release')) audit(AUDIT_OS_NOT, 'Gentoo');
if (!get_kb_item('Host/Gentoo/qpkg-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
var flag = 0;
var packages = [
{
'name' : 'media-gfx/librecad',
'unaffected' : make_list("ge 2.1.3-r7"),
'vulnerable' : make_list("lt 2.1.3-r7")
}
];
foreach var package( packages ) {
if (isnull(package['unaffected'])) package['unaffected'] = make_list();
if (isnull(package['vulnerable'])) package['vulnerable'] = make_list();
if (qpkg_check(package: package['name'] , unaffected: package['unaffected'], vulnerable: package['vulnerable'])) flag++;
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : qpkg_report_get()
);
exit(0);
}
else
{
qpkg_tests = list_uniq(qpkg_tests);
var tested = qpkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'LibreCAD');
}
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.gentoo.org/show_bug.cgi?id=825362
bugs.gentoo.org/show_bug.cgi?id=832210
security.gentoo.org/glsa/202305-26