#VU58339 Code Injection in CommCell - CVE-2021-34994

Vulnerability identifier: #VU58339

Vulnerability risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-34994

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
CommCell
Other software / Other software solutions

Vendor: Commvault

Description

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

The vulnerability exists due to improper input validation of a user-supplied string before executing it as JavaScript code within the DataProvider class. A remote authenticated attacker can send a specially crafted request and execute arbitrary code on the target system.

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

Mitigation
Install updates from vendor's website.

Vulnerable software versions

CommCell: before 11.25

---

External links
https://www.zerodayinitiative.com/advisories/ZDI-21-1329/

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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