Risk Letters

Exploited vulnerability

CVE-2021-3156

TLP:CLEAR

Sudo Heap-Based Buffer Overflow Vulnerability

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

Facts

  • Vendor: Sudo
  • Product: Sudo
  • CVSS: 7.8
  • EPSS (probability of exploitation within 30 days): 100 %
  • On CISA's Known Exploited Vulnerabilities list since: 6 April 2022
  • First known exploitation: 6 April 2022
  • CISA's deadline for US federal agencies: 27 April 2022
  • Weakness: CWE-122
  • First seen by Risk Letters: 6 April 2022

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD