CVE-2021-38648

Microsoft Open Management Infrastructure (OMI): Privilege Escalation

As of , CVE-2021-38648 in Microsoft Open Management Infrastructure (OMI) is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.

Exploited
Yes: CISA listed it on 3 November 2021
US federal deadline
17 November 202114 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.11Higher than 95% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
Not availableCISA listed it before 4 February 2022, where the EPSS files we read begin.
Public exploit
1 Metasploit module
Fix
No vendor link in CISA's entry

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

Microsoft Open Management Infrastructure (OMI) within Azure VM Management Extensions contains an unspecified vulnerability allowing privilege escalation.

CISA's description

Open Management Infrastructure Elevation of Privilege Vulnerability

The CVE record's description, from microsoft

CVE published
15 September 2021
Assigned by
microsoft
CVSS
7.8 High (CVSS 3.1, from the CNA)
CWE-1390
Weak Authentication
CISA SSVC, exploitation
active
CISA SSVC, automatable
no
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.

Public exploits

Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.

  • Metasploit: Microsoft OMI Management Interface Authentication Bypassexploit module, rank excellent

Open Management Infrastructure (OMI): other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2021-38647Remote Code ExecutionMicrosoft Open Management Infrastructure (OMI)Patch this weekRansomware use; Metasploit module; EPSS 0.990.99
CVE-2021-38649Privilege EscalationMicrosoft Open Management Infrastructure (OMI)Patch soon0.03
CVE-2021-38645Privilege EscalationMicrosoft Open Management Infrastructure (OMI)Patch soon0.03

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