Vulnerability identifier: #VU51109

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-25252

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apex One
Client/Desktop applications / Antivirus software/Personal firewalls
OfficeScan
Client/Desktop applications / Antivirus software/Personal firewalls
InterScan Web Security Virtual Appliance
Server applications / Server solutions for antivurus protection
Deep Security
Client/Desktop applications / Software for system administration
InterScan Messaging Security Virtual Appliance
Server applications / DLP, anti-spam, sniffers

Vendor: Trend Micro

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources within Virus Scan API (VSAPI) and Advanced Threat Scan Engine (ATSE) features. A remote attacker can pass specially crafted file to the application, trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apex One: 2019 - Patch 3 b8378

OfficeScan: XG - XG SP1 CP B5427r1

InterScan Web Security Virtual Appliance: 6.5 - 6.5 SP2 Patch 4

---

External links
http://success.trendmicro.com/solution/000285675

---

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.