| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE ID | CVE-2021-21973 CVE-2021-21972 |
| CWE ID | CWE-918 CWE-20 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #2 is available. |
| Vulnerable software Subscribe |
vCenter Server Server applications / Virtualization software Cloud Foundation Client/Desktop applications / Virtualization software |
| Vendor | VMware, Inc |
Risk: Medium
CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C] [PCI]
CVE-ID: CVE-2021-21973
CWE-ID:
CWE-918 - Server-Side Request Forgery (SSRF)
Exploit availability: No
DescriptionThe disclosed vulnerability allows a remote attacker to perform SSRF attacks.
The vulnerability exists due to insufficient validation of user-supplied input in vSphere Client. A remote non-authenticated attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.
Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsvCenter Server: 6.5, 6.5 U1, 6.5 U3, 6.5.0, 6.5.0a, 6.5.0b, 6.5.0c, 6.5.0d, 6.5u2c, 6.7, 6.7 U3, 6.7.0, 6.7.0d, 6.7u3f, 7.0
Cloud Foundation: before 3.10.1.2, 4.2
CPEhttps://www.vmware.com/security/advisories/VMSA-2021-0002.html
https://kb.vmware.com/s/article/82374
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
Risk: High
CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C] [PCI]
CVE-ID: CVE-2021-21972
CWE-ID:
CWE-20 - Improper Input Validation
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insufficient validation of user-supplied input in vSphere Client. A remote non-authenticated attacker can send a specially crafted HTTP request to port 443/tcp and execute arbitrary code on the system.
Install updates from vendor's website.
Vulnerable software versionsvCenter Server: 6.5, 6.5 U1, 6.5 U3, 6.5.0, 6.5.0a, 6.5.0b, 6.5.0c, 6.5.0d, 6.5u2c, 6.7, 6.7 U3, 6.7.0, 6.7.0d, 6.7u3f, 7.0
Cloud Foundation: before 3.10.1.2, 4.2
CPEhttps://www.vmware.com/security/advisories/VMSA-2021-0002.html
https://kb.vmware.com/s/article/82374
http://noahblog.360.cn/vcenter-6-5-7-0-rce-lou-dong-fen-xi/
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.