CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
75.8%
The remote Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5068-1 advisory.
It was discovered that GD Graphics Library incorrectly handled certain GD
and GD2 files. An attacker could possibly use this issue to cause a crash or expose sensitive information.
This issue only affected Ubuntu 20.04 LTS, Ubuntu 18.04 LTS, Ubuntu 16.04 ESM, and Ubuntu 14.04 ESM.
(CVE-2017-6363)
It was discovered that GD Graphics Library incorrectly handled certain TGA files. An attacker could possibly use this issue to cause a denial of service or expose sensitive information. (CVE-2021-381)
It was discovered that GD Graphics Library incorrectly handled certain files. An attacker could possibly use this issue to cause a crash. (CVE-2021-40145)
Tenable has extracted the preceding description block directly from the Ubuntu security advisory.
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 70300
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-5068-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(153137);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/28");
script_cve_id("CVE-2017-6363", "CVE-2021-38115", "CVE-2021-40145");
script_xref(name:"USN", value:"5068-1");
script_name(english:"Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS : GD library vulnerabilities (USN-5068-1)");
script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-5068-1 advisory.
It was discovered that GD Graphics Library incorrectly handled certain GD
and GD2 files. An attacker could possibly use this issue to cause a crash or expose sensitive information.
This issue only affected Ubuntu 20.04 LTS, Ubuntu 18.04 LTS, Ubuntu 16.04 ESM, and Ubuntu 14.04 ESM.
(CVE-2017-6363)
It was discovered that GD Graphics Library incorrectly handled certain TGA files. An attacker could
possibly use this issue to cause a denial of service or expose sensitive information. (CVE-2021-381)
It was discovered that GD Graphics Library incorrectly handled certain files. An attacker could possibly
use this issue to cause a crash. (CVE-2021-40145)
Tenable has extracted the preceding description block directly from the Ubuntu security advisory.
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://ubuntu.com/security/notices/USN-5068-1");
script_set_attribute(attribute:"solution", value:
"Update the affected libgd-dev, libgd-tools and / or libgd3 packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/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:N/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-2017-6363");
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:"2020/02/27");
script_set_attribute(attribute:"patch_publication_date", value:"2021/09/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/09/08");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:esm");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgd-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgd-tools");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgd2-noxpm-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgd2-xpm-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgd3");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Ubuntu Local Security Checks");
script_copyright(english:"Ubuntu Security Notice (C) 2021-2024 Canonical, Inc. / NASL script (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl", "ubuntu_pro_sub_detect.nasl");
script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/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);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('16.04' >< os_release || '18.04' >< os_release || '20.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 18.04 / 20.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);
var ubuntu_pro_detected = get_kb_item('Host/Ubuntu/Pro/Services/esm-apps');
ubuntu_pro_detected = !empty_or_null(ubuntu_pro_detected);
var pro_caveat_needed = FALSE;
var pkgs = [
{'osver': '16.04', 'pkgname': 'libgd-dev', 'pkgver': '2.1.1-4ubuntu0.16.04.12+esm1', 'ubuntu_pro': TRUE},
{'osver': '16.04', 'pkgname': 'libgd-tools', 'pkgver': '2.1.1-4ubuntu0.16.04.12+esm1', 'ubuntu_pro': TRUE},
{'osver': '16.04', 'pkgname': 'libgd3', 'pkgver': '2.1.1-4ubuntu0.16.04.12+esm1', 'ubuntu_pro': TRUE},
{'osver': '18.04', 'pkgname': 'libgd-dev', 'pkgver': '2.2.5-4ubuntu0.5', 'ubuntu_pro': FALSE},
{'osver': '18.04', 'pkgname': 'libgd-tools', 'pkgver': '2.2.5-4ubuntu0.5', 'ubuntu_pro': FALSE},
{'osver': '18.04', 'pkgname': 'libgd3', 'pkgver': '2.2.5-4ubuntu0.5', 'ubuntu_pro': FALSE},
{'osver': '20.04', 'pkgname': 'libgd-dev', 'pkgver': '2.2.5-5.2ubuntu2.1', 'ubuntu_pro': FALSE},
{'osver': '20.04', 'pkgname': 'libgd-tools', 'pkgver': '2.2.5-5.2ubuntu2.1', 'ubuntu_pro': FALSE},
{'osver': '20.04', 'pkgname': 'libgd3', 'pkgver': '2.2.5-5.2ubuntu2.1', 'ubuntu_pro': FALSE}
];
var flag = 0;
foreach var package_array ( pkgs ) {
var osver = NULL;
var pkgname = NULL;
var pkgver = NULL;
if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
var pro_required = NULL;
if (!empty_or_null(package_array['ubuntu_pro'])) pro_required = package_array['ubuntu_pro'];
if (osver && pkgname && pkgver) {
if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) {
flag++;
if (!ubuntu_pro_detected && !pro_caveat_needed) pro_caveat_needed = pro_required;
}
}
}
if (flag)
{
var extra = '';
if (pro_caveat_needed) {
extra += 'NOTE: This vulnerability check contains fixes that apply to packages only \n';
extra += 'available in Ubuntu ESM repositories. Access to these package security updates \n';
extra += 'require an Ubuntu Pro subscription.\n\n';
}
extra += ubuntu_report_get();
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : extra
);
exit(0);
}
else
{
var tested = ubuntu_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libgd-dev / libgd-tools / libgd3');
}
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
75.8%