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
Apple macOS Big Sur<11.2.1
11.2.1
Apple macOS Catalina Supplemental Update<10.15.7
10.15.7
Apple macOS Mojave<10.14.6
10.14.6
Sudo Sudo
Sudo Project Sudo>=1.8.2<1.8.32
Sudo Project Sudo>=1.9.0<1.9.5
Sudo Project Sudo=1.9.5
Sudo Project Sudo=1.9.5-patch1
Fedoraproject Fedora=32
Fedoraproject Fedora=33
Debian Debian Linux=9.0
Debian Debian Linux=10.0
Netapp Hci Management Node
NetApp OnCommand Unified Manager Core Package
Netapp Solidfire
McAfee Web Gateway=8.2.17
McAfee Web Gateway=9.2.8
McAfee Web Gateway=10.0.4
Synology DiskStation Manager=6.2
Synology Diskstation Manager Unified Controller=3.0
Synology Skynas Firmware
Synology Skynas
Synology Vs960hd Firmware
Synology Vs960hd
BeyondTrust Privilege Management for Mac<21.1.1
Beyondtrust Privilege Management For Unix\/linux<10.3.2-10
Oracle Micros Compact Workstation 3 Firmware=310
Oracle Micros Compact Workstation 3
Oracle Micros Es400 Firmware>=400<=410
Oracle Micros Es400
Oracle Micros Kitchen Display System Firmware=210
Oracle Micros Kitchen Display System
Oracle Micros Workstation 5a Firmware=5a
Oracle Micros Workstation 5a
Oracle Micros Workstation 6 Firmware>=610<=655
Oracle Micros Workstation 6
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
redhat/sudo<1.9.5
1.9.5
Netapp Active Iq Unified Manager Vmware Vsphere
Netapp Cloud Backup
NetApp ONTAP Select Deploy administration utility
Netapp Ontap Tools Vmware Vsphere=9
All of
Synology Skynas Firmware
Synology Skynas
All of
Synology Vs960hd Firmware
Synology Vs960hd
All of
Oracle Micros Compact Workstation 3 Firmware=310
Oracle Micros Compact Workstation 3
All of
Oracle Micros Es400 Firmware>=400<=410
Oracle Micros Es400
All of
Oracle Micros Kitchen Display System Firmware=210
Oracle Micros Kitchen Display System
All of
Oracle Micros Workstation 5a Firmware=5a
Oracle Micros Workstation 5a
All of
Oracle Micros Workstation 6 Firmware>=610<=655
Oracle Micros Workstation 6
<=10.5
<=10.6
<=11.0
<=11.1
<=11.2
<=11.3

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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