CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
75.1%
The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-4231 advisory.
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. 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 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)
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. When reading a file libwebp allocates an excessive amount of memory. The highest threat from this vulnerability is to the service availability.
(CVE-2020-36332)
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)
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 Oracle Linux Security Advisory ELSA-2021-4231.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(155405);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/11/17");
script_cve_id(
"CVE-2018-25009",
"CVE-2018-25010",
"CVE-2018-25012",
"CVE-2018-25013",
"CVE-2018-25014",
"CVE-2020-36330",
"CVE-2020-36331",
"CVE-2020-36332"
);
script_name(english:"Oracle Linux 8 : libwebp (ELSA-2021-4231)");
script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ELSA-2021-4231 advisory.
- 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. 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 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)
- 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. When reading a file libwebp allocates an excessive
amount of memory. The highest threat from this vulnerability is to the service availability.
(CVE-2020-36332)
- 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)
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://linux.oracle.com/errata/ELSA-2021-4231.html");
script_set_attribute(attribute:"solution", value:
"Update the affected libwebp and / or libwebp-devel 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-2018-25014");
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:"2021/11/16");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/11/17");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:8");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:libwebp");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:libwebp-devel");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Oracle Linux Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/local_checks_enabled");
exit(0);
}
include('audit.inc');
include('global_settings.inc');
include('rpm.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item('Host/OracleLinux')) audit(AUDIT_OS_NOT, 'Oracle Linux');
var release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
var os_ver = os_ver[1];
if (! preg(pattern:"^8([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 8', 'Oracle Linux ' + os_ver);
if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Oracle Linux', cpu);
var pkgs = [
{'reference':'libwebp-1.0.0-5.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libwebp-1.0.0-5.el8', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libwebp-1.0.0-5.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libwebp-devel-1.0.0-5.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libwebp-devel-1.0.0-5.el8', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libwebp-devel-1.0.0-5.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
];
var flag = 0;
foreach var package_array ( pkgs ) {
var reference = NULL;
var release = NULL;
var sp = NULL;
var cpu = NULL;
var el_string = NULL;
var rpm_spec_vers_cmp = NULL;
var epoch = NULL;
var allowmaj = NULL;
var exists_check = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) release = 'EL' + package_array['release'];
if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
if (reference && release) {
if (exists_check) {
if (rpm_exists(release:release, rpm:exists_check) && rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
} else {
if (rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
}
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : rpm_report_get()
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libwebp / libwebp-devel');
}
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-2018-25012
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-2020-36330
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36331
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36332
linux.oracle.com/errata/ELSA-2021-4231.html
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
75.1%