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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 1.000 (100.0th percentile), scored .
Very high probability of exploitation in the next 30 days — among the top 0.1% most-likely-to-be-exploited CVEs. 100th percentile — 100.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 1.000 · newest: 1.000 · change: 0.000
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
- lists.debian.org/debian-lts-announce/2021/01/msg00022.html (mailing-list, Mailing List, Third Party Advisory)
- seclists.org/fulldisclosure/2021/Jan/79 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2021/01/26/3 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202101-33 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2021/dsa-4839 (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Release Notes)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Release Notes)
- www.openwall.com/lists/oss-security/2021/01/27/1 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2021/01/27/2 (mailing-list, Mailing List, Third Party Advisory)
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sudo-pri… (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. 423 public proof-of-concept repositories are indexed.