Vulnerability · Published Apr 22, 2020 · Assigned by zdi

CVE-2020-10915

Critical 9.8

In plain English

A critical-severity unsafe deserialization in One Agent from VEEAM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 86.7% (higher than 99.7% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, public proof-of-concept code.

Severity (CVSS 3.0)9.8Critical

Exploit odds (30 days)86.7%top 0.3% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack tooling2Metasploit, Public PoC

Official description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of VEEAM One Agent 9.5.4.4587. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HandshakeResult method. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-10401.

Affected products (as reported)

Vendor	Product	Versions
VEEAM	One Agent	9.5.4.4587

Weakness: CWE-502 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://www.zerodayinitiative.com/advisories/ZDI-20-546/ x_refsource_MISC
https://www.veeam.com/kb3144 x_refsource_MISC
http://packetstormsecurity.com/files/157529/Veeam-ONE-Agent-.NET-Deserialization.html x_refsource_MISC