PT-2020-12416 · Veeam · Veeam One Agent

Edgar Boda-Majer + 1 · Published 2020-04-16 · Updated 2020-05-04 · CVE-2020-10914

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions VEEAM One Agent version 9.5.4.4587

Description This issue allows remote attackers to execute arbitrary code on affected installations. Authentication is not required to exploit this issue. The flaw exists within the PerformHandshake method and results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this issue to execute code in the context of the service account.

Recommendations For VEEAM One Agent version 9.5.4.4587, as a temporary workaround, consider restricting access to the PerformHandshake method until a patch is available. At the moment, there is no information about a newer version that contains a fix for this issue.

Exploit

Fix

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2020-10914

ZDI-20-545

Affected Products

Veeam One Agent

References · 6

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/misc/veeam_one_agent_deserialization.rb · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-10914 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-20-545 · Security Note
• https://veeam.com/kb3144 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-10914 · Vendor Advisory
• http://packetstormsecurity.com/files/157529/Veeam-ONE-Agent-.NET-Deserialization.html · Note