7.8

CVE-2021-3156

Warning

Exploit

EPSS 92.26%
Published 26.01.2021 21:15:12
Last modified 03.04.2025 19:47:48
Source cve@mitre.org
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Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character.

Affected products Warnungen 1 Metrics 4 CWE 1 References 37

Data is provided by the National Vulnerability Database (NVD)

Sudo Project ≫ Sudo Version >= 1.8.2 < 1.8.32

Sudo Project ≫ Sudo Version >= 1.9.0 < 1.9.5

Sudo Project ≫ Sudo Version1.9.5 Update-

Sudo Project ≫ Sudo Version1.9.5 Updatepatch1

Fedoraproject ≫ Fedora Version32

Fedoraproject ≫ Fedora Version33

Debian ≫ Debian Linux Version9.0

Debian ≫ Debian Linux Version10.0

Netapp ≫ Active Iq Unified Manager Version- SwPlatformvmware_vsphere

Netapp ≫ Cloud Backup Version-

Netapp ≫ Hci Management Node Version-

Netapp ≫ Oncommand Unified Manager Core Package Version-

Netapp ≫ Ontap Select Deploy Administration Utility Version-

Netapp ≫ Ontap Tools Version9 SwPlatformvmware_vsphere

Netapp ≫ Solidfire Version-

Mcafee ≫ Web Gateway Version8.2.17

Mcafee ≫ Web Gateway Version9.2.8

Mcafee ≫ Web Gateway Version10.0.4

Synology ≫ Diskstation Manager Unified Controller Version3.0

Synology ≫ Diskstation Manager Version6.2

Synology ≫ Skynas Firmware Version-

Synology ≫ Skynas Version-

Synology ≫ Vs960hd Firmware Version-

Synology ≫ Vs960hd Version-

Beyondtrust ≫ Privilege Management For Mac Version < 21.1.1

Oracle ≫ Micros Compact Workstation 3 Firmware Version310

Oracle ≫ Micros Compact Workstation 3 Version-

Oracle ≫ Micros Es400 Firmware Version >= 400 <= 410

Oracle ≫ Micros Es400 Version-

Oracle ≫ Micros Kitchen Display System Firmware Version210

Oracle ≫ Micros Kitchen Display System Version-

Oracle ≫ Micros Workstation 5a Firmware Version5a

Oracle ≫ Micros Workstation 5a Version-

Oracle ≫ Micros Workstation 6 Firmware Version >= 610 <= 655

Oracle ≫ Micros Workstation 6 Version-

Oracle ≫ Communications Performance Intelligence Center Version >= 10.3.0.0.0 <= 10.3.0.2.1

Oracle ≫ Communications Performance Intelligence Center Version >= 10.4.0.1.0 <= 10.4.0.3.1

Oracle ≫ Tekelec Platform Distribution Version >= 7.4.0 <= 7.7.1

06.04.2022: CISA Known Exploited Vulnerabilities (KEV) Catalog

Sudo Heap-Based Buffer Overflow Vulnerability

Vulnerability

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

Description

Apply updates per vendor instructions.

Required actions

EPSS Metriken
Type	Source	Score	Percentile
EPSS	FIRST.org	92.26%	0.997

CVSS Metriken
Source	Base Score	Exploit Score	Impact Score	Vector string
nvd@nist.gov	7.8	1.8	5.9	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd@nist.gov	7.2	3.9	10	AV:L/AC:L/Au:N/C:C/I:C/A:C
134c704f-9b21-4f2e-91b3-4a467353bcc0	7.8	1.8	5.9	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-193 Off-by-one Error

A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.

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

Patch

Third Party Advisory

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

Patch

Third Party Advisory

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

Patch

Third Party Advisory

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

Patch

Third Party Advisory

Mailing List

https://security.gentoo.org/glsa/202101-33

Third Party Advisory

http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html

Third Party Advisory

Exploit

VDB Entry

http://packetstormsecurity.com/files/161230/Sudo-Buffer-Overflow-Privilege-Escalation.html

Third Party Advisory

Exploit

VDB Entry

http://packetstormsecurity.com/files/161270/Sudo-1.9.5p1-Buffer-Overflow-Privilege-Escalation.html

Third Party Advisory

Exploit

VDB Entry

http://packetstormsecurity.com/files/161293/Sudo-1.8.31p2-1.9.5p1-Buffer-Overflow.html

Third Party Advisory

Exploit

VDB Entry

http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html

Third Party Advisory

Exploit

VDB Entry

http://seclists.org/fulldisclosure/2021/Feb/42

Third Party Advisory

Mailing List

http://seclists.org/fulldisclosure/2021/Jan/79

Third Party Advisory

Exploit

Mailing List

http://seclists.org/fulldisclosure/2024/Feb/3

Third Party Advisory

Exploit

Mailing List

http://www.openwall.com/lists/oss-security/2021/01/26/3

Third Party Advisory

Exploit

Mailing List

http://www.openwall.com/lists/oss-security/2021/01/27/1

Third Party Advisory

Mailing List

http://www.openwall.com/lists/oss-security/2021/01/27/2

Third Party Advisory

Mailing List

http://www.openwall.com/lists/oss-security/2021/02/15/1

Third Party Advisory

Exploit

Mailing List

http://www.openwall.com/lists/oss-security/2024/01/30/6

Exploit

Mailing List

http://www.openwall.com/lists/oss-security/2024/01/30/8

Mailing List

https://kc.mcafee.com/corporate/index?page=content&id=SB10348

Third Party Advisory

Broken Link

https://lists.debian.org/debian-lts-announce/2021/01/msg00022.html

Third Party Advisory

Mailing List

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/

Mailing List

Release Notes

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/

Mailing List

Release Notes

https://security.netapp.com/advisory/ntap-20210128-0001/

Third Party Advisory

https://security.netapp.com/advisory/ntap-20210128-0002/

Third Party Advisory

https://support.apple.com/kb/HT212177

Third Party Advisory

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sudo-privesc-jan2021-qnYQfcM

Third Party Advisory

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

Third Party Advisory

https://www.debian.org/security/2021/dsa-4839

Third Party Advisory

https://www.kb.cert.org/vuls/id/794544

Third Party Advisory

US Government Resource

https://www.openwall.com/lists/oss-security/2021/01/26/3

Third Party Advisory

Exploit

Mailing List

https://www.sudo.ws/stable.html#1.9.5p2

Release Notes

https://www.synology.com/security/advisory/Synology_SA_21_02

Third Party Advisory

https://www.vicarius.io/vsociety/posts/sudoedit-pwned-cve-2021-3156

Third Party Advisory

Exploit

https://nvd.nist.gov/vuln/detail/CVE-2021-3156

CVE Source (NVD)

https://cveawg.mitre.org/api/cve/CVE-2021-3156

CVE Source (JSON)

https://euvd.enisa.europa.eu/vulnerability/CVE-2021-3156

EUVD