Vulnerability identifier: #VU56001

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-2021-32971

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
AVEVA System Platform
Server applications / SCADA systems
AVEVA InTouch
Server applications / Other server solutions
AVEVA Historian
Server applications / Other server solutions
AVEVA Communication Drivers Pack
Server applications / Other server solutions
AVEVA Operations Integration Core
Server applications / Other server solutions
AVEVA Data Acquisition Servers
Server applications / Other server solutions
AVEVA Batch Management
Server applications / Other server solutions
AVEVA MES
Server applications / Other server solutions
AVEVA SuiteLink Server
Server applications / Other server solutions

Vendor: AVEVA Software, LLC.

Description

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

The vulnerability exists due to a NULL pointer dereference error in SuiteLink server while processing command 0x07. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

AVEVA System Platform: 2020 R2 P01

AVEVA InTouch: 2020 R2 P01

AVEVA Historian: 2020 R2 P01

AVEVA Communication Drivers Pack: 2020 R2

AVEVA Operations Integration Core: 3.0

AVEVA Data Acquisition Servers: All versions

AVEVA Batch Management: 2020

AVEVA MES: 2014 R2

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External links
http://ics-cert.us-cert.gov/advisories/icsa-21-231-01
http://www.aveva.com/content/dam/aveva/documents/support/cyber-security-updates/SecurityBulletin_AV...

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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.