Vulnerability in Beyondtrust Privilege_management_for_mac
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.
EPSS: 0.993 (99.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Beyondtrust Privilege_management_for_mac
- Beyondtrust Privilege_management_for_unix\/linux
- Mcafee Web_gateway — versions 8.2.17, 9.2.8, 10.0.4
- Netapp Active_iq_unified_manager
- Netapp Cloud_backup
- Netapp Hci_management_node
- Netapp Oncommand_unified_manager_core_package
- Netapp Ontap_select_deploy_administration_utility
- Netapp Ontap_tools — versions 9
- Netapp Solidfire
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)
- cve@mitre.org (mailing-list, Exploit, Mailing List, Third Party Advisory)
- cve@mitre.org (mailing-list, Exploit, Mailing List, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Mailing List, Release Notes)
- cve@mitre.org (vendor-advisory, Mailing List, Release Notes)
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3156?
- CVE-2021-3156 is a high-severity vulnerability in Beyondtrust Privilege_management_for_mac, classified under Off-by-one Error. CVSS score: 7.8/10. Published 2021-01-26.
- How severe is CVE-2021-3156?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-3156 known to be exploited?
- Yes. CVE-2021-3156 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-04-06), indicating it is being actively exploited. 416 public proof-of-concept repositories are indexed.