#VU27109 Deserialization of Untrusted Data in ONE - CVE-2020-10915

Vulnerability identifier: #VU27109

Vulnerability risk: High

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:Amber]

CVE-ID: CVE-2020-10915

CWE-ID: CWE-502

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
ONE
Server applications / Remote management servers, RDP, SSH

Vendor: Veeam

Description

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

The vulnerability exists in Veeam ONE Agent components residing on Veeam ONE and Veeam Backup & Replication servers due to insecure input validation when processing serialized data within the "HandshakeResult" method. A remote attacker can pass specially crafted data to the application 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

ONE: before 9.5.4.4587

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External links
https://www.zerodayinitiative.com/advisories/ZDI-20-546/
https://www.veeam.com/kb3144

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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, a fully functional exploit for this vulnerability is available.