Exploited
high
8.4
CWE
119 193
Advisory Published
CVE Published
Updated

CVE-2021-3156: Sudo Heap-Based Buffer Overflow Vulnerability

First published: Tue Jan 19 2021(Updated: )

A heap-based buffer overflow was found in the way sudo parses command line arguments. As per the researcher this vulnerability: - is exploitable by any local user (normal users and system users, sudoers and non-sudoers), without authentication (i.e., the attacker does not need to know the user's password); - was introduced in July 2011 (commit 8255ed69), and affects all legacy versions from 1.8.2 to 1.8.31p2 and all stable versions from 1.9.0 to 1.9.5p1, in their default configuration. This could lead to privilege escalation.

Credit: cve@mitre.org Qualys cve@mitre.org

Affected SoftwareAffected VersionHow to fix
debian/sudo
1.8.27-1+deb10u3
1.8.27-1+deb10u5
1.9.5p2-3+deb11u1
1.9.13p3-1+deb12u1
1.9.14p2-1
redhat/sudo<1.9.5
1.9.5
IBM InfoSphere Guardium z/OS<=10.5
IBM InfoSphere Guardium z/OS<=10.6
IBM InfoSphere Guardium z/OS<=11.0
IBM InfoSphere Guardium z/OS<=11.1
IBM InfoSphere Guardium z/OS<=11.2
IBM InfoSphere Guardium z/OS<=11.3
Apple macOS<11.2.1
11.2.1
Apple macOS Supplemental Update<10.15.7
10.15.7
macOS Mojave<10.14.6
10.14.6
CentOS Sudo
Sudo>=1.8.2<1.8.32
Sudo>=1.9.0<1.9.5
Sudo=1.9.5
Sudo=1.9.5-patch1
Red Hat Fedora=32
Red Hat Fedora=33
Debian Linux=9.0
Debian Linux=10.0
NetApp SolidFire & HCI Management Node
NetApp OnCommand Unified Manager for Windows
NetApp SolidFire & HCI Storage Node
McAfee Web Gateway Cloud Service=8.2.17
McAfee Web Gateway Cloud Service=9.2.8
McAfee Web Gateway Cloud Service=10.0.4
Synology Photos Diskstation Manager=6.2
Synology DiskStation Manager=3.0
Synology SkyNAS Firmware
Synology SkyNAS Firmware
Synology VS960HD
Synology VS960HD Firmware
BeyondTrust Privilege Management for Windows and Mac<21.1.1
BeyondTrust Privilege Management for Unix/Linux<10.3.2-10
Oracle MICROS Compact Workstation 3=310
Oracle Micros Compact Workstation 3 Firmware
Oracle Micros ES400 Firmware>=400<=410
Oracle Micros ES400 Firmware
Oracle MICROS Kitchen Display System=210
Oracle Micros Kitchen Display System Firmware
Oracle Micros Lucas=5a
Oracle Micros Workstation 5A Firmware
Oracle MICROS Workstation 6>=610<=655
Oracle Micros Workstation 6 Firmware
Oracle Communications Performance Intelligence Center>=10.3.0.0.0<=10.3.0.2.1
Oracle Communications Performance Intelligence Center>=10.4.0.1.0<=10.4.0.3.1
Oracle Tekelec Platform Distribution>=7.4.0<=7.7.1
NetApp Active IQ Unified Manager for VMware vSphere
NetApp Cloud Backup
NetApp ONTAP Select Deploy
NetApp ONTAP Tools for VMware vSphere=9
Synology Photos Diskstation Manager=6.2
All of
Synology SkyNAS Firmware
Synology SkyNAS Firmware
All of
Synology VS960HD
Synology VS960HD Firmware
All of
Oracle MICROS Compact Workstation 3=310
Oracle Micros Compact Workstation 3 Firmware
All of
Oracle Micros ES400 Firmware>=400<=410
Oracle Micros ES400 Firmware
All of
Oracle MICROS Kitchen Display System=210
Oracle Micros Kitchen Display System Firmware
All of
Oracle Micros Lucas=5a
Oracle Micros Workstation 5A Firmware
All of
Oracle MICROS Workstation 6>=610<=655
Oracle Micros Workstation 6 Firmware
>=1.8.2<1.8.32
>=1.9.0<1.9.5
=1.9.5
=1.9.5-patch1
=32
=33
=9.0
=10.0
=9
=8.2.17
=9.2.8
=10.0.4
=3.0
=6.2
All of
All of
<21.1.1
<10.3.2-10
All of
=310
All of
>=400<=410
All of
=210
All of
=5a
All of
>=610<=655
>=10.3.0.0.0<=10.3.0.2.1
>=10.4.0.1.0<=10.4.0.3.1
>=7.4.0<=7.7.1

Remedy

http://www.openwall.com/lists/oss-security/2021/09/14/2

Remedy

https://www.beyondtrust.com/blog/entry/security-advisory-privilege-management-for-unix-linux-pmul-basic-and-privilege-management-for-mac-pmm-affected-by-sudo-vulnerability

Remedy

https://www.oracle.com//security-alerts/cpujul2021.html

Remedy

https://www.oracle.com/security-alerts/cpuapr2022.html

Remedy

https://www.oracle.com/security-alerts/cpuoct2021.html

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this vulnerability?

    The vulnerability ID for this vulnerability is CVE-2021-3156.

  • What is the title of this vulnerability?

    The title of this vulnerability is Sudo Heap-Based Buffer Overflow Vulnerability.

  • What is the description of this vulnerability?

    The description of this vulnerability is that Sudo contains an off-by-one error that can result in a heap-based buffer overflow, which allows for privilege escalation.

  • Which software is affected by this vulnerability?

    The affected software includes Sudo, macOS Big Sur (up to version 11.2.1), macOS Catalina Supplemental Update (up to version 10.15.7), and macOS Mojave (up to version 10.14.6).

  • Where can I find more information about this vulnerability?

    More information about this vulnerability can be found at the following reference: [https://support.apple.com/en-us/HT212177](https://support.apple.com/en-us/HT212177).

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