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
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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.4 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
55.1%
The remote host is missing an update for the Debian
# SPDX-FileCopyrightText: 2021 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("1.3.6.1.4.1.25623.1.0.892714");
script_cve_id("CVE-2020-36311", "CVE-2021-33909", "CVE-2021-34693", "CVE-2021-3609");
script_tag(name:"creation_date", value:"2021-07-21 03:00:20 +0000 (Wed, 21 Jul 2021)");
script_version("2024-02-02T05:06:07+0000");
script_tag(name:"last_modification", value:"2024-02-02 05:06:07 +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:3.1/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:"2021-07-29 17:46:52 +0000 (Thu, 29 Jul 2021)");
script_name("Debian: Security Advisory (DLA-2714-1)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2021 Greenbone AG");
script_family("Debian Local Security Checks");
script_dependencies("gather-package-list.nasl");
script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages", re:"ssh/login/release=DEB9");
script_xref(name:"Advisory-ID", value:"DLA-2714-1");
script_xref(name:"URL", value:"https://www.debian.org/lts/security/2021/DLA-2714-1");
script_xref(name:"URL", value:"https://www.qualys.com/2021/07/20/cve-2021-33909/sequoia-local-privilege-escalation-linux.txt");
script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/linux-4.19");
script_xref(name:"URL", value:"https://wiki.debian.org/LTS");
script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'linux-4.19' package(s) announced via the DLA-2714-1 advisory.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");
script_tag(name:"insight", value:"Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.
This update is not yet available for the armhf (ARM EABI hard-float) architecture.
CVE-2020-36311
A flaw was discovered in the KVM subsystem for AMD CPUs, allowing an attacker to cause a denial of service by triggering destruction of a large SEV VM.
CVE-2021-3609
Norbert Slusarek reported a race condition vulnerability in the CAN BCM networking protocol, allowing a local attacker to escalate privileges.
CVE-2021-33909
The Qualys Research Labs discovered a size_t-to-int conversion vulnerability in the Linux kernel's filesystem layer. An unprivileged local attacker able to create, mount, and then delete a deep directory structure whose total path length exceeds 1GB, can take advantage of this flaw for privilege escalation.
Details can be found in the Qualys advisory at [link moved to references]
CVE-2021-34693
Norbert Slusarek discovered an information leak in the CAN BCM networking protocol. A local attacker can take advantage of this flaw to obtain sensitive information from kernel stack memory.
For Debian 9 stretch, these problems have been fixed in version 4.19.194-3~deb9u1. This additionally fixes a regression in the previous update (#990072) that affected LXC.
We recommend that you upgrade your linux-4.19 packages.
For the detailed security status of linux-4.19 please refer to its security tracker page at: [link moved to references]
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references]");
script_tag(name:"affected", value:"'linux-4.19' package(s) on Debian 9.");
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 == "DEB9") {
if(!isnull(res = isdpkgvuln(pkg:"linux-config-4.19", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-doc-4.19", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-686", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-686-pae", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-all", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-all-amd64", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-all-arm64", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-all-armel", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-all-armhf", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-all-i386", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-amd64", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-arm64", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-armmp", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-armmp-lpae", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-cloud-amd64", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-common", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-common-rt", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-marvell", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-rpi", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-rt-686-pae", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-rt-amd64", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-rt-arm64", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-4.19.0-0.bpo.17-rt-armmp", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-686", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-686-dbg", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-686-pae", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-686-pae-dbg", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-amd64", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-amd64-dbg", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-arm64", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-arm64-dbg", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-armmp", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-armmp-dbg", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-armmp-lpae", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-armmp-lpae-dbg", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-cloud-amd64", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-cloud-amd64-dbg", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-marvell", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-marvell-dbg", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-rpi", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-rpi-dbg", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-rt-686-pae", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-rt-686-pae-dbg", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-rt-amd64", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-rt-amd64-dbg", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-rt-arm64", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-rt-arm64-dbg", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-rt-armmp", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.19.0-0.bpo.17-rt-armmp-dbg", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-kbuild-4.19", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-perf-4.19", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-source-4.19", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-support-4.19.0-0.bpo.17", ver:"4.19.194-3~deb9u1", rls:"DEB9"))) {
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
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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.4 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
55.1%