CVE-2021-22017
VMware vCenter Server: Improper Access Control
As of , CVE-2021-22017 in VMware vCenter Server is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch soon.
- Exploited
- Yes: CISA listed it on 10 January 2022
- US federal deadline
- 24 January 202214 days after CISA listed it. US federal civilian agencies must fix it by then.
- Used in ransomware campaigns
- Not known to CISA
- EPSS score
- 0.49Higher than 98% 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
- None foundNeither Metasploit nor Exploit-DB lists one.
- 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
Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization.
CISA's description
Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to bypass proxy leading to internal endpoints being accessed.
The CVE record's description, from vmware
- CVE published
- 23 September 2021
- Assigned by
- vmware
- CVSS
- 5.3 Medium (CVSS 3.1, from CISA-ADP)
- CWE-23
- Relative Path Traversal
- CISA SSVC, exploitation
- active
- CISA SSVC, automatable
- yes
- CISA SSVC, technical impact
- partial
Timeline
- The CVE record was published.
- CISA added it to its list of exploited vulnerabilities.
- The US federal deadline to fix it.
vCenter Server: other exploited entries
| Vulnerability | Product | Our group | Listed | Deadline | EPSS |
|---|---|---|---|---|---|
| CVE-2020-3952Information Disclosure | VMware vCenter Server | Patch this weekMetasploit module; EPSS 0.90 | 0.90 | ||
| CVE-2021-21972Remote Code Execution | VMware vCenter Server | Patch this weekRansomware use; Metasploit module; EPSS 0.99 | 0.99 | ||
| CVE-2021-21985Improper Input Validation | VMware vCenter Server | Patch this weekRansomware use; Metasploit module; EPSS 0.99 | 0.99 | ||
| CVE-2021-22005File Upload | VMware vCenter Server | Patch this weekRansomware use; Metasploit module; EPSS 0.99 | 0.99 | ||
| CVE-2022-22948Incorrect Default File Permissions | VMware vCenter Server | Patch this weekMetasploit module | 0.13 | ||
| CVE-2023-34048Out-of-Bounds Write | VMware vCenter Server | Patch this weekEPSS 0.99 | 0.99 | ||
| CVE-2024-38812Heap-Based Buffer Overflow | VMware vCenter Server | Patch this weekEPSS 0.55 | 0.55 | ||
| CVE-2024-38813Privilege Escalation | VMware vCenter Server | Patch soon | 0.17 |
Read further
- CVE recordcve.org
- NVD entrynvd.nist.gov
- CISA's catalogcisa.gov
- EPSS for this CVEapi.first.org