7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
7.9 High
AI Score
Confidence
Low
0.001 Low
EPSS
Percentile
50.2%
The remote host is missing an update for the
# Copyright (C) 2016 Greenbone Networks GmbH
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.120659");
script_cve_id("CVE-2016-2383", "CVE-2016-2550", "CVE-2016-2847", "CVE-2016-3157");
script_tag(name:"creation_date", value:"2016-03-17 14:05:03 +0000 (Thu, 17 Mar 2016)");
script_version("2021-12-20T13:08:45+0000");
script_tag(name:"last_modification", value:"2021-12-20 13:08:45 +0000 (Mon, 20 Dec 2021)");
script_tag(name:"cvss_base", value:"7.2");
script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:C/I:C/A:C");
script_tag(name:"severity_vector", value:"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2016-12-03 03:26:00 +0000 (Sat, 03 Dec 2016)");
script_name("Amazon Linux: Security Advisory (ALAS-2016-669)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2016 Greenbone Networks GmbH");
script_family("Amazon Linux Local Security Checks");
script_dependencies("gather-package-list.nasl");
script_mandatory_keys("ssh/login/amazon_linux", "ssh/login/release");
script_xref(name:"Advisory-ID", value:"ALAS-2016-669");
script_xref(name:"URL", value:"https://alas.aws.amazon.com/ALAS-2016-669.html");
script_tag(name:"summary", value:"The remote host is missing an update for the 'kernel' package(s) announced via the ALAS-2016-669 advisory.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");
script_tag(name:"insight", value:"When running as a Xen 64-bit PV guest, user mode processes not supposed to be able to access I/O ports may be granted such permission, potentially resulting in one or more of in-guest privilege escalation, guest crashes (Denial of Service), or in-guest information leaks. (CVE-2016-3157)
In some cases, the kernel did not correctly fix backward jumps in a new eBPF program, which could allow arbitrary reads. (CVE-2016-2383)
The kernel incorrectly accounted for the number of in-flight fds over a unix domain socket to the original opener of the file descriptor. Another process could arbitrarily deplete the original file opener's maximum open files resource limit. (CVE-2016-2550)
A resource-exhaustion vulnerability was found in the kernel, where an unprivileged process could allocate and accumulate far more file descriptors than the process' limit. A local, unauthenticated user could exploit this flaw by sending file descriptors over a Unix socket and then closing them to keep the process' fd count low, thereby creating kernel-memory or file-descriptors exhaustion (denial of service). (CVE-2016-2847)");
script_tag(name:"affected", value:"'kernel' package(s) on Amazon Linux.");
script_tag(name:"solution", value:"Please install the updated package(s).");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"qod_type", value:"package");
exit(0);
}
include("revisions-lib.inc");
include("pkg-lib-rpm.inc");
release = rpm_get_ssh_release();
if(!release)
exit(0);
res = "";
report = "";
if(release == "AMAZON") {
if(!isnull(res = isrpmvuln(pkg:"kernel", rpm:"kernel~4.1.19~24.31.amzn1", rls:"AMAZON"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"kernel-debuginfo", rpm:"kernel-debuginfo~4.1.19~24.31.amzn1", rls:"AMAZON"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"kernel-debuginfo-common-i686", rpm:"kernel-debuginfo-common-i686~4.1.19~24.31.amzn1", rls:"AMAZON"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"kernel-debuginfo-common-x86_64", rpm:"kernel-debuginfo-common-x86_64~4.1.19~24.31.amzn1", rls:"AMAZON"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"kernel-devel", rpm:"kernel-devel~4.1.19~24.31.amzn1", rls:"AMAZON"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"kernel-doc", rpm:"kernel-doc~4.1.19~24.31.amzn1", rls:"AMAZON"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"kernel-headers", rpm:"kernel-headers~4.1.19~24.31.amzn1", rls:"AMAZON"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"kernel-tools", rpm:"kernel-tools~4.1.19~24.31.amzn1", rls:"AMAZON"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"kernel-tools-debuginfo", rpm:"kernel-tools-debuginfo~4.1.19~24.31.amzn1", rls:"AMAZON"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"kernel-tools-devel", rpm:"kernel-tools-devel~4.1.19~24.31.amzn1", rls:"AMAZON"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"perf", rpm:"perf~4.1.19~24.31.amzn1", rls:"AMAZON"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"perf-debuginfo", rpm:"perf-debuginfo~4.1.19~24.31.amzn1", rls:"AMAZON"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
exit(0);
7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
7.9 High
AI Score
Confidence
Low
0.001 Low
EPSS
Percentile
50.2%