CVE Identifier(s): CVE-2021-25252
Platform(s): Windows, Linux, macOS
CVSS 3.0 Score(s): 3.3 - 5.5
Severity Rating(s): Low - Medium
Trend Micro has released patches for products that utilize either the Virus Scan API (VSAPI) or Advanced Threat Scan Engine (ATSE) to resolve a memory exhaustion vulnerability that may lead to denial-of-service or system freeze if exploited.
Affected Versions and Solutions
Trend Micro has released the following solutions to address the issue on the affected product versions:
|Apex Central||2019 CP5534 (On premise)|
|Apex One||2019 CP9167 (On Premise)|
|Cloud Edge||5.0+ updated via ActiveUpdate||Appliance||Now|
|Deep Security||DS 10.0 U29|
DS 11.0 U25
DS 12.0 U15
DS 20.0 LTS Update 2021-01-18
|Control Manager||7.0 CP 3215||Windows||Now|
|Deep Discovery Analyzer||5.1+ updated via ActiveUpdate||All||Now|
|Deep Discovery Email Inspector||2.5+ updated via ActiveUpdate||All||Now|
|Deep Discovery Inspector||3.8+ updated via ActiveUpdate||All||Now|
|InterScan Messaging Security Virtual Appliance||9.1 CP2034||Virtual Appliance||Now|
|InterScan Web Security Virtual Appliance||6.5 CP1926||Virtual Appliance||Now|
|OfficeScan||XG SP1 CP6040||Windows||Now|
|ScanMail for Exchange||14.0 CP3083||Windows||Now|
|ScanMail for IBM Domino||5.8 CP1083||Windows|
|ServerProtect for Storage||6.0 CP1274||Windows||Now|
|ServerProtect for EMC Celerra||5.8 CP1573||EMC Celerra||Now|
|ServerProtect for Linux||3.0 CP1649||Linux||Now|
|ServerProtect for Windows/Netware||5.8 CP1571||Windows||Now|
|ServerProtect for Network Appliance Filers||5.8 CP1295||NetApp||Now|
|Safe Lock TXOne Edition||1.1 CP1042||Windows||Now|
|Worry-Free Business Security||10.1 SP1 Patch 2274||Windows||Now|
These is the minimum versions of the patch and/or build required to address the issue. Trend Micro highly encourages customers to obtain the latest version of the product if there is a newer one available than the one listed in this bulletin.
Customers are encouraged to visit Trend Micro’s Download Center to obtain the patches and any prerequisite software (such as Service Packs) before applying any of the solutions above.
Trend Micro’s scan engines - Virus Scan API (VSAPI) and Advanced Threat Scan Engine (ATSE) – are vulnerable to a memory exhaustion vulnerability that may lead to denial-of-service or system freeze if exploited by an attacker using a specially crafted file.
Please note that depending on the specific backend platform, the CVSS 3.0 impact scores are different due to the variation of impact via exploit.
- Linux endpoint products: 3.3 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- Windows endpoint products with user-mode engine: 3.3 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- Windows endpoint with kernel mode engine: 5.5 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Gateway products: 5.3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- macOS products: 4.0 AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Exploiting these type of vulnerabilities generally require that an attacker has access (physical or remote) to a vulnerable machine. In addition to timely application of patches and updated solutions, customers are also advised to review remote access to critical systems and ensure policies and perimeter security is up-to-date.
However, even though an exploit may require several specific conditions to be met, Trend Micro strongly encourages customers to update to the latest builds as soon as possible.
Trend Micro would like to thank the following individuals for responsibly disclosing these issues and working with Trend Micro to help protect our customers:
- Michael DePlante of Trend Micro's Zero Day Initiative
- Trend Micro Internal Research
- SECURITY BULLETIN: Trend Micro ServerProtect for Linux 3.0 Memory Exhaustion Denial-of-Service Vulnerabilities
- Security Bulletin: Trend Micro Antivirus for Mac 2021 (Consumer) Memory Exhaustion Denial-Of-Service Vulnerability
- Security Bulletin: Trend Micro Security 2021 (Consumer) Memory Exhaustion Denial-Of-Service Vulnerability