Photon OS 1.0: Docker PHSA-2021-1.0-0439 - Nessus

High   Plugin ID: 153929

This page contains detailed information about the Photon OS 1.0: Docker PHSA-2021-1.0-0439 Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Plugin Overview


ID: 153929
Name: Photon OS 1.0: Docker PHSA-2021-1.0-0439
Filename: PhotonOS_PHSA-2021-1_0-0439_docker.nasl
Vulnerability Published: 2021-09-30
This Plugin Published: 2021-10-07
Last Modification Time: 2021-10-19
Plugin Version: 1.4
Plugin Type: local
Plugin Family: PhotonOS Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/local_checks_enabled, Host/PhotonOS/release, Host/PhotonOS/rpm-list

Vulnerability Information


Severity: High
Vulnerability Published: 2021-09-30
Patch Published: 2021-10-07
CVE [?]: CVE-2021-41089, CVE-2021-41103
CPE [?]: cpe:/o:vmware:photonos:1.0, p-cpe:/a:vmware:photonos:docker

Synopsis

The remote PhotonOS host is missing multiple security updates.

Description

An update of the docker package has been released.

- Moby is an open-source project created by Docker to enable software containerization. A bug was found in Moby (Docker Engine) where attempting to copy files using `docker cp` into a specially-crafted container can result in Unix file permission changes for existing files in the hosts filesystem, widening access to others. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in Moby (Docker Engine) 20.10.9. Users should update to this version as soon as possible. Running containers do not need to be restarted. (CVE-2021-41089)

- containerd is an open source container runtime with an emphasis on simplicity, robustness and portability. A bug was found in containerd where container root directories and some plugins had insufficiently restricted permissions, allowing otherwise unprivileged Linux users to traverse directory contents and execute programs. When containers included executable programs with extended permission bits (such as setuid), unprivileged Linux users could discover and execute those programs. When the UID of an unprivileged Linux user on the host collided with the file owner or group inside a container, the unprivileged Linux user on the host could discover, read, and modify those files. This vulnerability has been fixed in containerd 1.4.11 and containerd 1.5.7. Users should update to these version when they are released and may restart containers or update directory permissions to mitigate the vulnerability. Users unable to update should limit access to the host to trusted users. Update directory permission on container bundles directories. (CVE-2021-41103)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected Linux packages.

Public Exploits


Target Network Port(s): N/A
Target Asset(s): N/A
Exploit Available: True (GitHub)
Exploit Ease: Exploits (PoCs) are available

Here's the list of publicly known exploits and PoCs for verifying the Photon OS 1.0: Docker PHSA-2021-1.0-0439 vulnerability:

  1. GitHub: https://github.com/ssst0n3/my_vulnerabilities
    [CVE-2021-41089]
  2. GitHub: https://github.com/ssst0n3/ssst0n3
    [CVE-2021-41089]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information


CVSS Score Source [?]: CVE-2021-41103
CVSS V2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C/E:U/RL:OF/RC:C
CVSS Base Score:7.2 (High)
Impact Subscore:10.0
Exploitability Subscore:3.9
CVSS Temporal Score:5.3 (Medium)
CVSS Environmental Score:NA (None)
Modified Impact Subscore:NA
Overall CVSS Score:5.3 (Medium)
CVSS V3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS Base Score:7.8 (High)
Impact Subscore:5.9
Exploitability Subscore:1.8
CVSS Temporal Score:6.8 (Medium)
CVSS Environmental Score:NA (None)
Modified Impact Subscore:NA
Overall CVSS Score:6.8 (Medium)

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Plugin Source


This is the PhotonOS_PHSA-2021-1_0-0439_docker.nasl nessus plugin source code. This script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from VMware Security Advisory PHSA-2021-1.0-0439. The text
# itself is copyright (C) VMware, Inc.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(153929);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/10/19");

  script_cve_id("CVE-2021-41089", "CVE-2021-41103");

  script_name(english:"Photon OS 1.0: Docker PHSA-2021-1.0-0439");

  script_set_attribute(attribute:"synopsis", value:
"The remote PhotonOS host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"An update of the docker package has been released.

  - Moby is an open-source project created by Docker to enable software containerization. A bug was found in
    Moby (Docker Engine) where attempting to copy files using `docker cp` into a specially-crafted container
    can result in Unix file permission changes for existing files in the hosts filesystem, widening access
    to others. This bug does not directly allow files to be read, modified, or executed without an additional
    cooperating process. This bug has been fixed in Moby (Docker Engine) 20.10.9. Users should update to this
    version as soon as possible. Running containers do not need to be restarted. (CVE-2021-41089)

  - containerd is an open source container runtime with an emphasis on simplicity, robustness and portability.
    A bug was found in containerd where container root directories and some plugins had insufficiently
    restricted permissions, allowing otherwise unprivileged Linux users to traverse directory contents and
    execute programs. When containers included executable programs with extended permission bits (such as
    setuid), unprivileged Linux users could discover and execute those programs. When the UID of an
    unprivileged Linux user on the host collided with the file owner or group inside a container, the
    unprivileged Linux user on the host could discover, read, and modify those files. This vulnerability has
    been fixed in containerd 1.4.11 and containerd 1.5.7. Users should update to these version when they are
    released and may restart containers or update directory permissions to mitigate the vulnerability. Users
    unable to update should limit access to the host to trusted users. Update directory permission on
    container bundles directories. (CVE-2021-41103)

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://github.com/vmware/photon/wiki/Security-Updates-1.0-439.md");
  script_set_attribute(attribute:"solution", value:
"Update the affected Linux packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/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-2021-41103");

  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:"2021/09/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/10/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/10/07");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:docker");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:photonos:1.0");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"PhotonOS 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/local_checks_enabled", "Host/PhotonOS/release", "Host/PhotonOS/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);

var release = get_kb_item('Host/PhotonOS/release');
if (isnull(release) || release !~ "^VMware Photon") audit(AUDIT_OS_NOT, 'PhotonOS');
if (release !~ "^VMware Photon (?:Linux|OS) 1\.0(\D|$)") audit(AUDIT_OS_NOT, 'PhotonOS 1.0');

if (!get_kb_item('Host/PhotonOS/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, 'PhotonOS', cpu);

var flag = 0;

if (rpm_check(release:'PhotonOS-1.0', cpu:'x86_64', reference:'docker-18.09.9-7.ph1')) flag++;
if (rpm_check(release:'PhotonOS-1.0', cpu:'x86_64', reference:'docker-doc-18.09.9-7.ph1')) 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, 'docker');
}

The latest version of this script can be found in these locations depending on your platform:

  • Linux / Unix:
    /opt/nessus/lib/nessus/plugins/PhotonOS_PHSA-2021-1_0-0439_docker.nasl
  • Windows:
    C:\ProgramData\Tenable\Nessus\nessus\plugins\PhotonOS_PHSA-2021-1_0-0439_docker.nasl
  • Mac OS X:
    /Library/Nessus/run/lib/nessus/plugins/PhotonOS_PHSA-2021-1_0-0439_docker.nasl

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How to Run


Here is how to run the Photon OS 1.0: Docker PHSA-2021-1.0-0439 as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

  1. Click to start a New Scan.
  2. Select Advanced Scan.
  3. Navigate to the Plugins tab.
  4. On the top right corner click to Disable All plugins.
  5. On the left side table select PhotonOS Local Security Checks plugin family.
  6. On the right side table select Photon OS 1.0: Docker PHSA-2021-1.0-0439 plugin ID 153929.
  7. Specify the target on the Settings tab and click to Save the scan.
  8. Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl PhotonOS_PHSA-2021-1_0-0439_docker.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a PhotonOS_PHSA-2021-1_0-0439_docker.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - PhotonOS_PHSA-2021-1_0-0439_docker.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state PhotonOS_PHSA-2021-1_0-0439_docker.nasl -t <IP/HOST>

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References


See also: Similar and related Nessus plugins:
  • 158722 - Amazon Linux 2 : docker (ALAS-2022-017) (deprecated)
  • 160411 - Amazon Linux 2 : docker (ALASDOCKER-2022-017)
  • 153861 - Amazon Linux AMI : docker (ALAS-2021-1537)
  • 154769 - openSUSE 15 Security Update : containerd, docker, runc (openSUSE-SU-2021:1404-1)
  • 154606 - openSUSE 15 Security Update : containerd, docker, runc (openSUSE-SU-2021:3506-1)
  • 157398 - openSUSE 15 Security Update : containerd, docker (openSUSE-SU-2022:0334-1)
  • 153979 - Photon OS 2.0: Docker PHSA-2021-2.0-0402
  • 153946 - Photon OS 3.0: Docker PHSA-2021-3.0-0311
  • 153973 - Photon OS 4.0: Docker PHSA-2021-4.0-0113
  • 154100 - SUSE SLES12 Security Update : containerd, docker, runc (SUSE-SU-2021:3336-1)
  • 154638 - SUSE SLES15 Security Update : containerd, docker, runc (SUSE-SU-2021:3506-1)
  • 157188 - SUSE SLES12 Security Update : containerd, docker (SUSE-SU-2022:0213-1)
  • 157388 - SUSE SLES15 Security Update : containerd, docker (SUSE-SU-2022:0334-1)
  • 153866 - Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 21.04 : docker.io vulnerability (USN-5103-1)

Version


This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file PhotonOS_PHSA-2021-1_0-0439_docker.nasl version 1.4. For more plugins, visit the Nessus Plugin Library.

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