#VU58337 Improper Authentication in CommCell - CVE-2021-34993

Vulnerability identifier: #VU58337

Vulnerability risk: High

CVSSv4.0: 8.1 [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:U/U:Amber]

CVE-ID: CVE-2021-34993

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
CommCell
Other software / Other software solutions

Vendor: Commvault

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests within the CVSearchService service. A remote attacker can bypass authentication process and gain unauthorized access to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

CommCell: before 11.25

---

External links
https://www.zerodayinitiative.com/advisories/ZDI-21-1328/

---

Q & A

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.