CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:L/AC:L/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
EPSS
Percentile
5.1%
Authentication bypass allows to install signed packages without administrator privileges
An authentication bypass flaw has been found in PackageKit that allows users without administrator privileges to install signed packages. A local attacker can use this vulnerability to install vulnerable packages to further compromise a system. (CVE-2018-1106)
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2 Security Advisory ALAS-2018-1006.
#
include("compat.inc");
if (description)
{
script_id(109366);
script_version("1.3");
script_cvs_date("Date: 2018/08/31 12:25:00");
script_cve_id("CVE-2018-1106");
script_xref(name:"ALAS", value:"2018-1006");
script_name(english:"Amazon Linux 2 : PackageKit (ALAS-2018-1006)");
script_summary(english:"Checks rpm output for the updated packages");
script_set_attribute(
attribute:"synopsis",
value:"The remote Amazon Linux 2 host is missing a security update."
);
script_set_attribute(
attribute:"description",
value:
"Authentication bypass allows to install signed packages without
administrator privileges
An authentication bypass flaw has been found in PackageKit that allows
users without administrator privileges to install signed packages. A
local attacker can use this vulnerability to install vulnerable
packages to further compromise a system. (CVE-2018-1106)"
);
script_set_attribute(
attribute:"see_also",
value:"https://alas.aws.amazon.com/AL2/ALAS-2018-1006.html"
);
script_set_attribute(
attribute:"solution",
value:"Run 'yum update PackageKit' to update your system."
);
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:N");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:PackageKit");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:PackageKit-command-not-found");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:PackageKit-cron");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:PackageKit-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:PackageKit-glib");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:PackageKit-glib-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:PackageKit-gstreamer-plugin");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:PackageKit-gtk3-module");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:PackageKit-yum");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:PackageKit-yum-plugin");
script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2");
script_set_attribute(attribute:"patch_publication_date", value:"2018/04/26");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/04/27");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Amazon Linux Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/rpm-list");
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);
release = get_kb_item("Host/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "2")
{
if (os_ver == 'A') os_ver = 'AMI';
audit(AUDIT_OS_NOT, "Amazon Linux 2", "Amazon Linux " + os_ver);
}
if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"PackageKit-1.1.5-2.amzn2.0.1")) flag++;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"PackageKit-command-not-found-1.1.5-2.amzn2.0.1")) flag++;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"PackageKit-cron-1.1.5-2.amzn2.0.1")) flag++;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"PackageKit-debuginfo-1.1.5-2.amzn2.0.1")) flag++;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"PackageKit-glib-1.1.5-2.amzn2.0.1")) flag++;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"PackageKit-glib-devel-1.1.5-2.amzn2.0.1")) flag++;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"PackageKit-gstreamer-plugin-1.1.5-2.amzn2.0.1")) flag++;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"PackageKit-gtk3-module-1.1.5-2.amzn2.0.1")) flag++;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"PackageKit-yum-1.1.5-2.amzn2.0.1")) flag++;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"PackageKit-yum-plugin-1.1.5-2.amzn2.0.1")) flag++;
if (flag)
{
if (report_verbosity > 0) security_note(port:0, extra:rpm_report_get());
else security_note(0);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "PackageKit / PackageKit-command-not-found / PackageKit-cron / etc");
}
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:L/AC:L/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
EPSS
Percentile
5.1%