Multiple vulnerabilities in Cisco HyperFlex HX



| Updated: 2021-08-25
Risk Critical
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2021-1497
CVE-2021-1498
CWE-ID CWE-78
Exploitation vector Network
Public exploit Vulnerability #1 is being exploited in the wild.
Vulnerability #2 is being exploited in the wild.
Vulnerable software
 HyperFlex HX
Hardware solutions / Office equipment, IP-phones, print servers

Vendor Cisco Systems, Inc

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

Updated: 25.08.2021

Updated description of both vulnerabilities to reflect their in-the-wild exploitation, raised bulletin risk level from High to Critical.

1) OS Command Injection

EUVDB-ID: #VU52944

Risk: Critical

CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red]

CVE-ID: CVE-2021-1497

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the web-based management interface. A remote unauthenticated attacker can pass specially crafted data to the application and execute arbitrary OS commands on the target system as the root user.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note, the vulnerability is being exploited in-the-wild by the Mirai botnet in August 2021.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

HyperFlex HX: - - 4.5

CPE2.3 External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hyperflex-rce-TjjNrkpR


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) OS Command Injection

EUVDB-ID: #VU52945

Risk: Critical

CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red]

CVE-ID: CVE-2021-1498

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the web-based management interface. A remote unauthenticated attacker can pass specially crafted data to the application and execute arbitrary OS commands on the target system as the tomcat8 user.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note, the vulnerability is being exploited in-the-wild by the Mirai botnet in August 2021.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

HyperFlex HX: - - 4.5

CPE2.3 External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hyperflex-rce-TjjNrkpR


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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