CVE-2021-3156

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

7.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2 /10

CVSS v2.0 : HIGH

V2 Legend

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

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References
Link Resource
https://www.openwall.com/lists/oss-security/2021/01/26/3 Exploit Mailing List Third Party Advisory
https://www.sudo.ws/stable.html#1.9.5p2 Release Notes Vendor Advisory
http://www.openwall.com/lists/oss-security/2021/01/26/3 Exploit Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202101-33 Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/ Mailing List Third Party Advisory
https://www.debian.org/security/2021/dsa-4839 Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/ Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/01/27/1 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/01/27/2 Mailing List Third Party Advisory
http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html Third Party Advisory VDB Entry
https://security.netapp.com/advisory/ntap-20210128-0001/ Third Party Advisory
https://security.netapp.com/advisory/ntap-20210128-0002/ Third Party Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sudo-privesc-jan2021-qnYQfcM Third Party Advisory
http://packetstormsecurity.com/files/161230/Sudo-Buffer-Overflow-Privilege-Escalation.html Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/161270/Sudo-1.9.5p1-Buffer-Overflow-Privilege-Escalation.html Exploit Third Party Advisory VDB Entry
https://www.kb.cert.org/vuls/id/794544 Third Party Advisory US Government Resource
http://packetstormsecurity.com/files/161293/Sudo-1.8.31p2-1.9.5p1-Buffer-Overflow.html Exploit Third Party Advisory VDB Entry
https://support.apple.com/kb/HT212177 Third Party Advisory
http://seclists.org/fulldisclosure/2021/Feb/42 Mailing List Third Party Advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10348 Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/02/15/1 Exploit Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/01/msg00022.html Mailing List Third Party Advisory
http://seclists.org/fulldisclosure/2021/Jan/79 Exploit Mailing List 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 Patch Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_21_02 Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.html Patch Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/09/14/2 Mailing List Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:sudo_project:sudo:*:*:*:*:*:*:*:*
cpe:2.3:a:sudo_project:sudo:*:*:*:*:*:*:*:*
cpe:2.3:a:sudo_project:sudo:1.9.5:-:*:*:*:*:*:*
cpe:2.3:a:sudo_project:sudo:1.9.5:patch1:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

Configuration 3 (hide)

OR cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Configuration 4 (hide)

OR cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:oncommand_unified_manager_core_package:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*

Configuration 5 (hide)

OR cpe:2.3:a:mcafee:web_gateway:8.2.17:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:web_gateway:9.2.8:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:web_gateway:10.0.4:*:*:*:*:*:*:*

Configuration 6 (hide)

OR cpe:2.3:a:synology:diskstation_manager:6.2:*:*:*:*:*:*:*
cpe:2.3:a:synology:diskstation_manager_unified_controller:3.0:*:*:*:*:*:*:*

Configuration 7 (hide)

AND
cpe:2.3:o:synology:skynas_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:synology:skynas:-:*:*:*:*:*:*:*

Configuration 8 (hide)

AND
cpe:2.3:o:synology:vs960hd_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:synology:vs960hd:-:*:*:*:*:*:*:*

Configuration 9 (hide)

OR cpe:2.3:a:beyondtrust:privilege_management_for_mac:*:*:*:*:*:*:*:*
cpe:2.3:a:beyondtrust:privilege_management_for_unix\/linux:*:*:*:*:basic:*:*:*

Configuration 10 (hide)

AND
cpe:2.3:o:oracle:micros_compact_workstation_3_firmware:310:*:*:*:*:*:*:*
cpe:2.3:h:oracle:micros_compact_workstation_3:-:*:*:*:*:*:*:*

Configuration 11 (hide)

AND
cpe:2.3:o:oracle:micros_es400_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:oracle:micros_es400:-:*:*:*:*:*:*:*

Configuration 12 (hide)

AND
cpe:2.3:o:oracle:micros_kitchen_display_system_firmware:210:*:*:*:*:*:*:*
cpe:2.3:h:oracle:micros_kitchen_display_system:-:*:*:*:*:*:*:*

Configuration 13 (hide)

AND
cpe:2.3:o:oracle:micros_workstation_5a_firmware:5a:*:*:*:*:*:*:*
cpe:2.3:h:oracle:micros_workstation_5a:-:*:*:*:*:*:*:*

Configuration 14 (hide)

AND
cpe:2.3:o:oracle:micros_workstation_6_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:oracle:micros_workstation_6:-:*:*:*:*:*:*:*
Information

Published : 2021-01-26 21:15

Updated : 2021-10-20 11:17

NVD link : CVE-2021-3156

Mitre link : CVE-2021-3156

JSON object : View

Products Affected

netapp

  • oncommand_unified_manager_core_package
  • solidfire
  • hci_management_node

mcafee

  • web_gateway

synology

  • diskstation_manager
  • vs960hd
  • skynas
  • diskstation_manager_unified_controller
  • vs960hd_firmware
  • skynas_firmware

oracle

  • micros_es400_firmware
  • micros_es400
  • micros_kitchen_display_system_firmware
  • micros_workstation_6
  • micros_workstation_6_firmware
  • micros_workstation_5a_firmware
  • micros_compact_workstation_3
  • micros_workstation_5a
  • micros_compact_workstation_3_firmware
  • micros_kitchen_display_system

debian

  • debian_linux

sudo_project

  • sudo

fedoraproject

  • fedora

beyondtrust

  • privilege_management_for_unix\/linux
  • privilege_management_for_mac
CWE
CWE-193

Off-by-one Error