Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-3156

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.

Published

2021-01-26T21:15:12.987

Last Modified

2025-04-03T19:47:48.433

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 7.8 (HIGH)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

3.9

Impact Score

10.0

Weaknesses

Type: Primary
CWE-193
Type: Secondary
CWE-193

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	sudo_project	sudo	< 1.8.32	Yes
Application	sudo_project	sudo	< 1.9.5	Yes
Application	sudo_project	sudo	1.9.5	Yes
Application	sudo_project	sudo	1.9.5	Yes
Operating System	fedoraproject	fedora	32	Yes
Operating System	fedoraproject	fedora	33	Yes
Operating System	debian	debian_linux	9.0	Yes
Operating System	debian	debian_linux	10.0	Yes
Application	netapp	active_iq_unified_manager	-	Yes
Application	netapp	cloud_backup	-	Yes
Application	netapp	hci_management_node	-	Yes
Application	netapp	oncommand_unified_manager_core_package	-	Yes
Application	netapp	ontap_select_deploy_administration_utility	-	Yes
Application	netapp	ontap_tools	9	Yes
Application	netapp	solidfire	-	Yes
Application	mcafee	web_gateway	8.2.17	Yes
Application	mcafee	web_gateway	9.2.8	Yes
Application	mcafee	web_gateway	10.0.4	Yes
Application	synology	diskstation_manager_unified_controller	3.0	Yes
Operating System	synology	diskstation_manager	6.2	Yes
Operating System	synology	skynas_firmware	-	Yes
Hardware	synology	skynas	-	No
Operating System	synology	vs960hd_firmware	-	Yes
Hardware	synology	vs960hd	-	No
Application	beyondtrust	privilege_management_for_mac	< 21.1.1	Yes
Application	beyondtrust	privilege_management_for_unix\/linux	< 10.3.2-10	Yes
Operating System	oracle	micros_compact_workstation_3_firmware	310	Yes
Hardware	oracle	micros_compact_workstation_3	-	No
Operating System	oracle	micros_es400_firmware	≤ 410	Yes
Hardware	oracle	micros_es400	-	No
Operating System	oracle	micros_kitchen_display_system_firmware	210	Yes
Hardware	oracle	micros_kitchen_display_system	-	No
Operating System	oracle	micros_workstation_5a_firmware	5a	Yes
Hardware	oracle	micros_workstation_5a	-	No
Operating System	oracle	micros_workstation_6_firmware	≤ 655	Yes
Hardware	oracle	micros_workstation_6	-	No
Application	oracle	communications_performance_intelligence_center	≤ 10.3.0.2.1	Yes
Application	oracle	communications_performance_intelligence_center	≤ 10.4.0.3.1	Yes
Application	oracle	tekelec_platform_distribution	≤ 7.7.1	Yes

References

http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html Exploit, Third Party Advisory, VDB Entry ([email protected])
http://packetstormsecurity.com/files/161230/Sudo-Buffer-Overflow-Privilege-Escalation.html Exploit, Third Party Advisory, VDB Entry ([email protected])
http://packetstormsecurity.com/files/161270/Sudo-1.9.5p1-Buffer-Overflow-Privilege-Escalation.html Exploit, Third Party Advisory, VDB Entry ([email protected])
http://packetstormsecurity.com/files/161293/Sudo-1.8.31p2-1.9.5p1-Buffer-Overflow.html Exploit, Third Party Advisory, VDB Entry ([email protected])
http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html Exploit, Third Party Advisory, VDB Entry ([email protected])
http://seclists.org/fulldisclosure/2021/Feb/42 Mailing List, Third Party Advisory ([email protected])
http://seclists.org/fulldisclosure/2021/Jan/79 Exploit, Mailing List, Third Party Advisory ([email protected])
http://seclists.org/fulldisclosure/2024/Feb/3 Exploit, Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/01/26/3 Exploit, Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/01/27/1 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/01/27/2 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/02/15/1 Exploit, Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/09/14/2 Mailing List, Patch, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2024/01/30/6 Exploit, Mailing List ([email protected])
http://www.openwall.com/lists/oss-security/2024/01/30/8 Mailing List ([email protected])
https://kc.mcafee.com/corporate/index?page=content&id=SB10348 Broken Link, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2021/01/msg00022.html Mailing List, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/ Mailing List, Release Notes ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/ Mailing List, Release Notes ([email protected])
https://security.gentoo.org/glsa/202101-33 Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20210128-0001/ Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20210128-0002/ Third Party Advisory ([email protected])
https://support.apple.com/kb/HT212177 Third Party Advisory ([email protected])
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sudo-privesc-jan2021-qnYQfcM Third Party Advisory ([email protected])
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 ([email protected])
https://www.debian.org/security/2021/dsa-4839 Third Party Advisory ([email protected])
https://www.kb.cert.org/vuls/id/794544 Third Party Advisory, US Government Resource ([email protected])
https://www.openwall.com/lists/oss-security/2021/01/26/3 Exploit, Mailing List, Third Party Advisory ([email protected])
https://www.oracle.com//security-alerts/cpujul2021.html Patch, Third Party Advisory ([email protected])
https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory ([email protected])
https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory ([email protected])
https://www.sudo.ws/stable.html#1.9.5p2 Release Notes ([email protected])
https://www.synology.com/security/advisory/Synology_SA_21_02 Third Party Advisory ([email protected])
https://www.vicarius.io/vsociety/posts/sudoedit-pwned-cve-2021-3156 Exploit, Third Party Advisory ([email protected])
http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html Exploit, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://packetstormsecurity.com/files/161230/Sudo-Buffer-Overflow-Privilege-Escalation.html Exploit, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://packetstormsecurity.com/files/161270/Sudo-1.9.5p1-Buffer-Overflow-Privilege-Escalation.html Exploit, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://packetstormsecurity.com/files/161293/Sudo-1.8.31p2-1.9.5p1-Buffer-Overflow.html Exploit, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html Exploit, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/fulldisclosure/2021/Feb/42 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/fulldisclosure/2021/Jan/79 Exploit, Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/fulldisclosure/2024/Feb/3 Exploit, Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/01/26/3 Exploit, Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/01/27/1 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/01/27/2 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/02/15/1 Exploit, Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/09/14/2 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2024/01/30/6 Exploit, Mailing List (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2024/01/30/8 Mailing List (af854a3a-2127-422b-91ae-364da2661108)
https://kc.mcafee.com/corporate/index?page=content&id=SB10348 Broken Link, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2021/01/msg00022.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/ Mailing List, Release Notes (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/ Mailing List, Release Notes (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202101-33 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20210128-0001/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20210128-0002/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://support.apple.com/kb/HT212177 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sudo-privesc-jan2021-qnYQfcM Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
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 (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2021/dsa-4839 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.kb.cert.org/vuls/id/794544 Third Party Advisory, US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
https://www.openwall.com/lists/oss-security/2021/01/26/3 Exploit, Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com//security-alerts/cpujul2021.html Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.sudo.ws/stable.html#1.9.5p2 Release Notes (af854a3a-2127-422b-91ae-364da2661108)
https://www.synology.com/security/advisory/Synology_SA_21_02 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)