The remote Ubuntu 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4971-2 advisory.
A flaw was found in libwebp in versions before 1.0.1. An out-of-bounds read was found in function WebPMuxCreateInternal. The highest threat from this vulnerability is to data confidentiality and to the service availability. (CVE-2018-25009, CVE-2018-25012)
A flaw was found in libwebp in versions before 1.0.1. An out-of-bounds read was found in function ApplyFilter. The highest threat from this vulnerability is to data confidentiality and to the service availability. (CVE-2018-25010)
A flaw was found in libwebp in versions before 1.0.1. A heap-based buffer overflow was found in PutLE16().
The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2018-25011)
A flaw was found in libwebp in versions before 1.0.1. An out-of-bounds read was found in function ShiftBytes. The highest threat from this vulnerability is to data confidentiality and to the service availability. (CVE-2018-25013)
A flaw was found in libwebp in versions before 1.0.1. An unitialized variable is used in function ReadSymbol. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2018-25014)
A flaw was found in libwebp in versions before 1.0.1. A heap-based buffer overflow in function WebPDecodeRGBInto is possible due to an invalid check for buffer size. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2020-36328)
A flaw was found in libwebp in versions before 1.0.1. A use-after-free was found due to a thread being killed too early. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2020-36329)
A flaw was found in libwebp in versions before 1.0.1. An out-of-bounds read was found in function ChunkVerifyAndAssign. The highest threat from this vulnerability is to data confidentiality and to the service availability. (CVE-2020-36330)
A flaw was found in libwebp in versions before 1.0.1. An out-of-bounds read was found in function ChunkAssignData. The highest threat from this vulnerability is to data confidentiality and to the service availability. (CVE-2020-36331)
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-4971-2. 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(150492);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/20");
script_cve_id(
"CVE-2018-25009",
"CVE-2018-25010",
"CVE-2018-25011",
"CVE-2018-25012",
"CVE-2018-25013",
"CVE-2018-25014",
"CVE-2020-36328",
"CVE-2020-36329",
"CVE-2020-36330",
"CVE-2020-36331"
);
script_xref(name:"USN", value:"4971-2");
script_name(english:"Ubuntu 16.04 ESM : libwebp vulnerabilities (USN-4971-2)");
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 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in
the USN-4971-2 advisory.
- A flaw was found in libwebp in versions before 1.0.1. An out-of-bounds read was found in function
WebPMuxCreateInternal. The highest threat from this vulnerability is to data confidentiality and to the
service availability. (CVE-2018-25009, CVE-2018-25012)
- A flaw was found in libwebp in versions before 1.0.1. An out-of-bounds read was found in function
ApplyFilter. The highest threat from this vulnerability is to data confidentiality and to the service
availability. (CVE-2018-25010)
- A flaw was found in libwebp in versions before 1.0.1. A heap-based buffer overflow was found in PutLE16().
The highest threat from this vulnerability is to data confidentiality and integrity as well as system
availability. (CVE-2018-25011)
- A flaw was found in libwebp in versions before 1.0.1. An out-of-bounds read was found in function
ShiftBytes. The highest threat from this vulnerability is to data confidentiality and to the service
availability. (CVE-2018-25013)
- A flaw was found in libwebp in versions before 1.0.1. An unitialized variable is used in function
ReadSymbol. The highest threat from this vulnerability is to data confidentiality and integrity as well as
system availability. (CVE-2018-25014)
- A flaw was found in libwebp in versions before 1.0.1. A heap-based buffer overflow in function
WebPDecodeRGBInto is possible due to an invalid check for buffer size. The highest threat from this
vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2020-36328)
- A flaw was found in libwebp in versions before 1.0.1. A use-after-free was found due to a thread being
killed too early. The highest threat from this vulnerability is to data confidentiality and integrity as
well as system availability. (CVE-2020-36329)
- A flaw was found in libwebp in versions before 1.0.1. An out-of-bounds read was found in function
ChunkVerifyAndAssign. The highest threat from this vulnerability is to data confidentiality and to the
service availability. (CVE-2020-36330)
- A flaw was found in libwebp in versions before 1.0.1. An out-of-bounds read was found in function
ChunkAssignData. The highest threat from this vulnerability is to data confidentiality and to the service
availability. (CVE-2020-36331)
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-4971-2");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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:N/S:U/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-2020-36329");
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:"2021/05/21");
script_set_attribute(attribute:"patch_publication_date", value:"2021/06/10");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/06/10");
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:"p-cpe:/a:canonical:ubuntu_linux:libwebp-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libwebp5");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libwebpdemux1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libwebpmux1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:webp");
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 (! ('16.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04', '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': '16.04', 'pkgname': 'libwebp-dev', 'pkgver': '0.4.4-1ubuntu0.1~esm1'},
{'osver': '16.04', 'pkgname': 'libwebp5', 'pkgver': '0.4.4-1ubuntu0.1~esm1'},
{'osver': '16.04', 'pkgname': 'libwebpdemux1', 'pkgver': '0.4.4-1ubuntu0.1~esm1'},
{'osver': '16.04', 'pkgname': 'libwebpmux1', 'pkgver': '0.4.4-1ubuntu0.1~esm1'},
{'osver': '16.04', 'pkgname': 'webp', 'pkgver': '0.4.4-1ubuntu0.1~esm1'}
];
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, 'libwebp-dev / libwebp5 / libwebpdemux1 / libwebpmux1 / webp');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-25009
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-25010
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-25011
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-25012
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-25013
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-25014
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36328
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36329
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36330
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36331
ubuntu.com/security/notices/USN-4971-2