#VU77811 Improper authentication in Unified Data Protection - CVE-2023-26258

Vulnerability identifier: #VU77811

Vulnerability risk: High

CVSSv4.0: 8.9 [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:P/U:Amber]

CVE-ID: CVE-2023-26258

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Unified Data Protection
Client/Desktop applications / Other client software

Vendor: Arcserve

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to a logic error in the authentication process. A remote attacker can bypass authentication and gain unauthorized access to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Unified Data Protection: 7.0 Update 1 - 9.0

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External links
https://documentation.arcserve.com/Arcserve-UDP/Available/9.0/ENU/Bookshelf_Files/HTML/Update1/default.htm#Issues_Fixed.htm?TocPath=_____9
https://www.mdsec.co.uk/2023/06/cve-2023-26258-remote-code-execution-in-arcserve-udp-backup/

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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. However, proof of concept for this vulnerability is available.