7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7 High
AI Score
Confidence
Low
7.2 High
CVSS2
Access Vector
LOCAL
Access 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
0.001 Low
EPSS
Percentile
43.9%
The remote host is missing an update for the
# SPDX-FileCopyrightText: 2018 Greenbone AG
# 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-only
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.843841");
script_cve_id("CVE-2018-17972", "CVE-2018-18281", "CVE-2018-18445", "CVE-2018-18653", "CVE-2018-18955", "CVE-2018-6559");
script_tag(name:"creation_date", value:"2018-12-04 06:53:24 +0000 (Tue, 04 Dec 2018)");
script_version("2024-02-02T05:06:06+0000");
script_tag(name:"last_modification", value:"2024-02-02 05:06:06 +0000 (Fri, 02 Feb 2024)");
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:"2019-01-28 18:30:01 +0000 (Mon, 28 Jan 2019)");
script_name("Ubuntu: Security Advisory (USN-3835-1)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2018 Greenbone AG");
script_family("Ubuntu Local Security Checks");
script_dependencies("gather-package-list.nasl");
script_mandatory_keys("ssh/login/ubuntu_linux", "ssh/login/packages", re:"ssh/login/release=UBUNTU18\.10");
script_xref(name:"Advisory-ID", value:"USN-3835-1");
script_xref(name:"URL", value:"https://ubuntu.com/security/notices/USN-3835-1");
script_tag(name:"summary", value:"The remote host is missing an update for the 'linux, linux-gcp, linux-kvm, linux-raspi2' package(s) announced via the USN-3835-1 advisory.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");
script_tag(name:"insight", value:"Jann Horn discovered that the procfs file system implementation in the
Linux kernel did not properly restrict the ability to inspect the kernel
stack of an arbitrary task. A local attacker could use this to expose
sensitive information. (CVE-2018-17972)
Jann Horn discovered that the mremap() system call in the Linux kernel did
not properly flush the TLB when completing, potentially leaving access to a
physical page after it has been released to the page allocator. A local
attacker could use this to cause a denial of service (system crash), expose
sensitive information, or possibly execute arbitrary code. (CVE-2018-18281)
It was discovered that the BPF verifier in the Linux kernel did not
correctly compute numeric bounds in some situations. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2018-18445)
Daniel Dadap discovered that the module loading implementation in the Linux
kernel did not properly enforce signed module loading when booted with UEFI
Secure Boot in some situations. A local privileged attacker could use this
to execute untrusted code in the kernel. (CVE-2018-18653)
Jann Horn discovered that the Linux kernel mishandles mapping UID or GID
ranges inside nested user namespaces in some situations. A local attacker
could use this to bypass access controls on resources outside the
namespace. (CVE-2018-18955)
Philipp Wendler discovered that the overlayfs implementation in the Linux
kernel did not properly verify the directory contents permissions from
within a unprivileged user namespace. A local attacker could use this to
expose sensitive information (protected file names). (CVE-2018-6559)");
script_tag(name:"affected", value:"'linux, linux-gcp, linux-kvm, linux-raspi2' package(s) on Ubuntu 18.10.");
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-deb.inc");
release = dpkg_get_ssh_release();
if(!release)
exit(0);
res = "";
report = "";
if(release == "UBUNTU18.10") {
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.18.0-1004-gcp", ver:"4.18.0-1004.5", rls:"UBUNTU18.10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.18.0-1005-kvm", ver:"4.18.0-1005.5", rls:"UBUNTU18.10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.18.0-1007-raspi2", ver:"4.18.0-1007.9", rls:"UBUNTU18.10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.18.0-12-generic", ver:"4.18.0-12.13", rls:"UBUNTU18.10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.18.0-12-generic-lpae", ver:"4.18.0-12.13", rls:"UBUNTU18.10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.18.0-12-lowlatency", ver:"4.18.0-12.13", rls:"UBUNTU18.10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.18.0-12-snapdragon", ver:"4.18.0-12.13", rls:"UBUNTU18.10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-gcp", ver:"4.18.0.1004.4", rls:"UBUNTU18.10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-generic", ver:"4.18.0.12.13", rls:"UBUNTU18.10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-generic-lpae", ver:"4.18.0.12.13", rls:"UBUNTU18.10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-gke", ver:"4.18.0.1004.4", rls:"UBUNTU18.10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-kvm", ver:"4.18.0.1005.5", rls:"UBUNTU18.10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-lowlatency", ver:"4.18.0.12.13", rls:"UBUNTU18.10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-raspi2", ver:"4.18.0.1007.4", rls:"UBUNTU18.10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-snapdragon", ver:"4.18.0.12.13", rls:"UBUNTU18.10"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
exit(0);
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7 High
AI Score
Confidence
Low
7.2 High
CVSS2
Access Vector
LOCAL
Access 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
0.001 Low
EPSS
Percentile
43.9%