CVE-2019-14287: High severity Sudo Project Sudo vulnerability

Published Oct 10, 2019
·
Updated

A flaw was found in sudo before version 1.8.28. When sudo is configured to allow a user to run commands as an arbitrary user via the 'ALL' keyword in a 'Runas' specification, it is possible to run commands as root.

Other sources

A flaw was found in the way sudo implemented running commands with arbitrary user ID. If a sudoers entry is written to allow the attacker to run a command as any user except root, this flaw can be used by the attacker to bypass that restriction.

In Sudo before 1.8.28, an attacker with access to a Runas ALL sudoer account can bypass certain policy blacklists and session PAM modules, and can cause incorrect logging, by invoking sudo with a crafted user ID. For example, this allows bypass of !root configuration, and USER= logging, for a "sudo -u \#$((0xffffffff))" command.

Affected Software

81 affected componentsFixes available
redhat/sudo<0:1.7.2p1-31.el5_11.1
0:1.7.2p1-31.el5_11.1
redhat/sudo<0:1.8.6p3-29.el6_10.2
0:1.8.6p3-29.el6_10.2
redhat/sudo<0:1.8.6p3-12.el6_5.2
0:1.8.6p3-12.el6_5.2
redhat/sudo<0:1.8.6p3-15.el6_6.2
0:1.8.6p3-15.el6_6.2
redhat/sudo<0:1.8.23-4.el7_7.1
0:1.8.23-4.el7_7.1
redhat/sudo<0:1.8.6p7-17.el7_2.2
0:1.8.6p7-17.el7_2.2
redhat/sudo<0:1.8.6p7-23.el7_3.2
0:1.8.6p7-23.el7_3.2
redhat/sudo<0:1.8.19p2-12.el7_4.1
0:1.8.19p2-12.el7_4.1
redhat/sudo<0:1.8.19p2-14.el7_5.1
0:1.8.19p2-14.el7_5.1
redhat/sudo<0:1.8.23-3.el7_6.1
0:1.8.23-3.el7_6.1
redhat/sudo<0:1.8.25p1-8.el8_1
0:1.8.25p1-8.el8_1
redhat/sudo<0:1.8.25p1-4.el8_0.2
0:1.8.25p1-4.el8_0.2
redhat/redhat-release-virtualization-host<0:4.2-15.1.el7
0:4.2-15.1.el7
redhat/redhat-virtualization-host<0:4.2-20191022.0.el7_6
0:4.2-20191022.0.el7_6
debian/sudo<=1.8.27-1, <=1.8.19p1-2.1
1.8.19p1-2.1+deb9u11.8.27-1+deb10u11.8.27-1.1
redhat/sudo<1.8.28
1.8.28
Sudo Project Sudo<1.8.28
Fedoraproject Fedora=29
Fedoraproject Fedora=30
Fedoraproject Fedora=31
Debian Debian Linux=8.0
Debian Debian Linux=9.0
Debian Debian Linux=10.0
openSUSE Leap=15.0
openSUSE Leap=15.1
Canonical Ubuntu Linux=12.04
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=19.04
NetApp Element Software Management Node
redhat OpenShift Container Platform=4.1
redhat Virtualization=4.2
redhat Enterprise Linux=8.0
redhat Enterprise Linux Desktop=6.0
redhat Enterprise Linux Desktop=7.0
redhat Enterprise Linux Eus=7.5
redhat Enterprise Linux Eus=7.6
redhat Enterprise Linux Eus=7.7
redhat Enterprise Linux Eus=8.1
redhat Enterprise Linux Eus=8.2
redhat Enterprise Linux Eus=8.4
redhat Enterprise Linux Server=5.0
redhat Enterprise Linux Server=6.0
redhat Enterprise Linux Server=7.0
redhat Enterprise Linux Server Aus=6.5
redhat Enterprise Linux Server Aus=6.6
redhat Enterprise Linux Server Aus=7.2
redhat Enterprise Linux Server Aus=7.3
redhat Enterprise Linux Server Aus=7.4
redhat Enterprise Linux Server Aus=7.6
redhat Enterprise Linux Server Aus=7.7
redhat Enterprise Linux Server Aus=8.2
redhat Enterprise Linux Server Aus=8.4
redhat Enterprise Linux Server Tus=7.2
redhat Enterprise Linux Server Tus=7.3
redhat Enterprise Linux Server Tus=7.4
redhat Enterprise Linux Server Tus=7.6
redhat Enterprise Linux Server Tus=7.7
redhat Enterprise Linux Server Tus=8.2
redhat Enterprise Linux Server Tus=8.4
redhat Enterprise Linux Workstation=6.0
redhat Enterprise Linux Workstation=7.0
debian/sudo
1.9.5p2-3+deb11u11.9.5p2-3+deb11u31.9.13p3-1+deb12u31.9.13p3-1+deb12u21.9.16p2-31.9.17p2-4
alpine/sudo<1.8.27-r1
1.8.27-r1
alpine/sudo<1.8.28-r0
1.8.28-r0
alpine/sudo<1.8.28-r0
1.8.28-r0
alpine/sudo<1.8.28-r0
1.8.28-r0
alpine/sudo<1.8.28-r0
1.8.28-r0
alpine/sudo<1.8.28-r0
1.8.28-r0
alpine/sudo<1.8.28-r0
1.8.28-r0
alpine/sudo<1.8.28-r0
1.8.28-r0
alpine/sudo<1.8.28-r0
1.8.28-r0
alpine/sudo<1.8.28-r0
1.8.28-r0
alpine/sudo<1.8.28-r0
1.8.28-r0
alpine/sudo<1.8.28-r0
1.8.28-r0
alpine/sudo<1.8.28-r0
1.8.28-r0
alpine/sudo<1.8.28-r0
1.8.28-r0
alpine/sudo<1.8.28-r0
1.8.28-r0
alpine/sudo<1.8.23-r3
1.8.23-r3
alpine/sudo<1.8.25_p1-r3
1.8.25_p1-r3

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/sudo to a version that resolves this vulnerability.

    Fixed in 0:1.7.2p1-31.el5_11.1
  2. Upgrade

    Upgrade redhat/sudo to a version that resolves this vulnerability.

    Fixed in 0:1.8.6p3-29.el6_10.2
  3. Upgrade

    Upgrade redhat/sudo to a version that resolves this vulnerability.

    Fixed in 0:1.8.6p3-12.el6_5.2
  4. Upgrade

    Upgrade redhat/sudo to a version that resolves this vulnerability.

    Fixed in 0:1.8.6p3-15.el6_6.2
  5. Upgrade

    Upgrade redhat/sudo to a version that resolves this vulnerability.

    Fixed in 0:1.8.23-4.el7_7.1
  6. Upgrade

    Upgrade redhat/sudo to a version that resolves this vulnerability.

    Fixed in 0:1.8.6p7-17.el7_2.2
  7. Upgrade

    Upgrade redhat/sudo to a version that resolves this vulnerability.

    Fixed in 0:1.8.6p7-23.el7_3.2
  8. Upgrade

    Upgrade redhat/sudo to a version that resolves this vulnerability.

    Fixed in 0:1.8.19p2-12.el7_4.1
  9. Upgrade

    Upgrade redhat/sudo to a version that resolves this vulnerability.

    Fixed in 0:1.8.19p2-14.el7_5.1
  10. Upgrade

    Upgrade redhat/sudo to a version that resolves this vulnerability.

    Fixed in 0:1.8.23-3.el7_6.1
  11. Upgrade

    Upgrade redhat/sudo to a version that resolves this vulnerability.

    Fixed in 0:1.8.25p1-8.el8_1
  12. Upgrade

    Upgrade redhat/sudo to a version that resolves this vulnerability.

    Fixed in 0:1.8.25p1-4.el8_0.2
  13. Upgrade

    Upgrade redhat/redhat-release-virtualization-host to a version that resolves this vulnerability.

    Fixed in 0:4.2-15.1.el7
  14. Upgrade

    Upgrade redhat/redhat-virtualization-host to a version that resolves this vulnerability.

    Fixed in 0:4.2-20191022.0.el7_6
  15. Upgrade

    Upgrade debian/sudo to a version that resolves this vulnerability.

    Fixed in 1.8.19p1-2.1+deb9u1Fixed in 1.8.27-1+deb10u1Fixed in 1.8.27-1.1
  16. Upgrade

    Upgrade redhat/sudo to a version that resolves this vulnerability.

    Fixed in 1.8.28
  17. Upgrade

    Upgrade debian/sudo to a version that resolves this vulnerability.

    Fixed in 1.9.5p2-3+deb11u1Fixed in 1.9.5p2-3+deb11u3Fixed in 1.9.13p3-1+deb12u3Fixed in 1.9.13p3-1+deb12u2Fixed in 1.9.16p2-3Fixed in 1.9.17p2-4
  18. Upgrade

    Upgrade alpine/sudo to a version that resolves this vulnerability.

    Fixed in 1.8.27-r1
  19. Upgrade

    Upgrade alpine/sudo to a version that resolves this vulnerability.

    Fixed in 1.8.28-r0
  20. Upgrade

    Upgrade alpine/sudo to a version that resolves this vulnerability.

    Fixed in 1.8.23-r3
  21. Upgrade

    Upgrade alpine/sudo to a version that resolves this vulnerability.

    Fixed in 1.8.25_p1-r3
  22. Upgrade

    Upgrade sudo to a version that resolves this vulnerability.

    Fixed in 1.8.28
  23. Configuration

    Examine each sudoers entry whose Runas specification includes ! and ensure that the root user is not among the exclusions, including exclusions specified by name, user ID, or a Runas_Alias.

    sudoers Runas user-list exclusions = Do not exclude root with !

Event History

Oct 14, 2019
CVE Published
03:00 PM
Oct 17, 2019
CVE Published
via MITRE·05:03 PM
Data Sourced
via MITRE·05:03 PM
Description
Data Sourced
via NVD·06:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·06:15 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the vulnerability ID for this flaw in sudo?

The vulnerability ID for this flaw in sudo is CVE-2019-14287.

2

What is the severity of CVE-2019-14287?

The severity of CVE-2019-14287 is high.

3

How does the vulnerability in sudo affect the system?

The vulnerability in sudo allows an attacker with access to a Runas ALL sudoer account to bypass certain policy blacklists and session PAM modules, and can cause incorrect logging.

4

How can an attacker exploit CVE-2019-14287?

An attacker can exploit CVE-2019-14287 by invoking sudo with a crafted user ID.

5

Is there a fix available for this vulnerability in sudo?

Yes, the fix for this vulnerability in sudo is version 1.8.28.

Company

Resources

Contact

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