The remote Ubuntu 18.04 LTS / 20.04 LTS / 21.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5024-1 advisory.
A use-after-free vulnerability exists in the way certain events are processed for ImageLoader objects of Webkit WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. In order to trigger the vulnerability, a victim must be tricked into visiting a malicious webpage. (CVE-2021-21775)
A use-after-free vulnerability exists in the way Webkits GraphicsContext handles certain events in WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. A victim must be tricked into visiting a malicious web page to trigger this vulnerability.
(CVE-2021-21779)
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 Ubuntu Security Notice USN-5024-1. 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(152135);
script_version("1.12");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/16");
script_cve_id(
"CVE-2021-21775",
"CVE-2021-21779",
"CVE-2021-30663",
"CVE-2021-30665",
"CVE-2021-30689",
"CVE-2021-30720",
"CVE-2021-30734",
"CVE-2021-30744",
"CVE-2021-30749",
"CVE-2021-30758",
"CVE-2021-30795",
"CVE-2021-30797",
"CVE-2021-30799"
);
script_xref(name:"USN", value:"5024-1");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2021/11/17");
script_name(english:"Ubuntu 18.04 LTS / 20.04 LTS : WebKitGTK vulnerabilities (USN-5024-1)");
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 18.04 LTS / 20.04 LTS / 21.04 host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-5024-1 advisory.
- A use-after-free vulnerability exists in the way certain events are processed for ImageLoader objects of
Webkit WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further
memory corruption. In order to trigger the vulnerability, a victim must be tricked into visiting a
malicious webpage. (CVE-2021-21775)
- A use-after-free vulnerability exists in the way Webkits GraphicsContext handles certain events in
WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory
corruption. A victim must be tricked into visiting a malicious web page to trigger this vulnerability.
(CVE-2021-21779)
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://ubuntu.com/security/notices/USN-5024-1");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
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:F/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:F/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-30799");
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:"2021/04/29");
script_set_attribute(attribute:"patch_publication_date", value:"2021/07/28");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/07/28");
script_set_attribute(attribute:"plugin_type", value:"local");
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:gir1.2-javascriptcoregtk-4.0");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gir1.2-webkit2-4.0");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libjavascriptcoregtk-4.0-18");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libjavascriptcoregtk-4.0-bin");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libjavascriptcoregtk-4.0-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libwebkit2gtk-4.0-37");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libwebkit2gtk-4.0-37-gtk2");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libwebkit2gtk-4.0-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:webkit2gtk-driver");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Ubuntu Local Security Checks");
script_copyright(english:"Ubuntu Security Notice (C) 2021-2023 Canonical, Inc. / NASL script (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.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 (! ('18.04' >< os_release || '20.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 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 pkgs = [
{'osver': '18.04', 'pkgname': 'gir1.2-javascriptcoregtk-4.0', 'pkgver': '2.32.3-0ubuntu0.18.04.1'},
{'osver': '18.04', 'pkgname': 'gir1.2-webkit2-4.0', 'pkgver': '2.32.3-0ubuntu0.18.04.1'},
{'osver': '18.04', 'pkgname': 'libjavascriptcoregtk-4.0-18', 'pkgver': '2.32.3-0ubuntu0.18.04.1'},
{'osver': '18.04', 'pkgname': 'libjavascriptcoregtk-4.0-bin', 'pkgver': '2.32.3-0ubuntu0.18.04.1'},
{'osver': '18.04', 'pkgname': 'libjavascriptcoregtk-4.0-dev', 'pkgver': '2.32.3-0ubuntu0.18.04.1'},
{'osver': '18.04', 'pkgname': 'libwebkit2gtk-4.0-37', 'pkgver': '2.32.3-0ubuntu0.18.04.1'},
{'osver': '18.04', 'pkgname': 'libwebkit2gtk-4.0-37-gtk2', 'pkgver': '2.32.3-0ubuntu0.18.04.1'},
{'osver': '18.04', 'pkgname': 'libwebkit2gtk-4.0-dev', 'pkgver': '2.32.3-0ubuntu0.18.04.1'},
{'osver': '18.04', 'pkgname': 'webkit2gtk-driver', 'pkgver': '2.32.3-0ubuntu0.18.04.1'},
{'osver': '20.04', 'pkgname': 'gir1.2-javascriptcoregtk-4.0', 'pkgver': '2.32.3-0ubuntu0.20.04.1'},
{'osver': '20.04', 'pkgname': 'gir1.2-webkit2-4.0', 'pkgver': '2.32.3-0ubuntu0.20.04.1'},
{'osver': '20.04', 'pkgname': 'libjavascriptcoregtk-4.0-18', 'pkgver': '2.32.3-0ubuntu0.20.04.1'},
{'osver': '20.04', 'pkgname': 'libjavascriptcoregtk-4.0-bin', 'pkgver': '2.32.3-0ubuntu0.20.04.1'},
{'osver': '20.04', 'pkgname': 'libjavascriptcoregtk-4.0-dev', 'pkgver': '2.32.3-0ubuntu0.20.04.1'},
{'osver': '20.04', 'pkgname': 'libwebkit2gtk-4.0-37', 'pkgver': '2.32.3-0ubuntu0.20.04.1'},
{'osver': '20.04', 'pkgname': 'libwebkit2gtk-4.0-37-gtk2', 'pkgver': '2.32.3-0ubuntu0.20.04.1'},
{'osver': '20.04', 'pkgname': 'libwebkit2gtk-4.0-dev', 'pkgver': '2.32.3-0ubuntu0.20.04.1'},
{'osver': '20.04', 'pkgname': 'webkit2gtk-driver', 'pkgver': '2.32.3-0ubuntu0.20.04.1'}
];
var flag = 0;
foreach 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'];
if (osver && pkgname && pkgver) {
if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : ubuntu_report_get()
);
exit(0);
}
else
{
var tested = ubuntu_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'gir1.2-javascriptcoregtk-4.0 / gir1.2-webkit2-4.0 / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | 18.04 | cpe:/o:canonical:ubuntu_linux:18.04:-:lts |
canonical | ubuntu_linux | 20.04 | cpe:/o:canonical:ubuntu_linux:20.04:-:lts |
canonical | ubuntu_linux | gir1.2-javascriptcoregtk-4.0 | p-cpe:/a:canonical:ubuntu_linux:gir1.2-javascriptcoregtk-4.0 |
canonical | ubuntu_linux | gir1.2-webkit2-4.0 | p-cpe:/a:canonical:ubuntu_linux:gir1.2-webkit2-4.0 |
canonical | ubuntu_linux | libjavascriptcoregtk-4.0-18 | p-cpe:/a:canonical:ubuntu_linux:libjavascriptcoregtk-4.0-18 |
canonical | ubuntu_linux | libjavascriptcoregtk-4.0-bin | p-cpe:/a:canonical:ubuntu_linux:libjavascriptcoregtk-4.0-bin |
canonical | ubuntu_linux | libjavascriptcoregtk-4.0-dev | p-cpe:/a:canonical:ubuntu_linux:libjavascriptcoregtk-4.0-dev |
canonical | ubuntu_linux | libwebkit2gtk-4.0-37 | p-cpe:/a:canonical:ubuntu_linux:libwebkit2gtk-4.0-37 |
canonical | ubuntu_linux | libwebkit2gtk-4.0-37-gtk2 | p-cpe:/a:canonical:ubuntu_linux:libwebkit2gtk-4.0-37-gtk2 |
canonical | ubuntu_linux | libwebkit2gtk-4.0-dev | p-cpe:/a:canonical:ubuntu_linux:libwebkit2gtk-4.0-dev |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21775
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21779
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30663
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30665
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30689
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30720
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30734
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30744
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30749
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30758
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30795
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30797
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30799
ubuntu.com/security/notices/USN-5024-1