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 2. News & Events
 3. Cybersecurity Advisories
 4. ICS Advisory

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ICS Advisory


AXIS A1001

Release Date
July 25, 2023
Alert Code
ICSA-23-206-01



1. EXECUTIVE SUMMARY

 * CVSS v3 7.1
 * ATTENTION: Exploitable from adjacent network
 * Vendor: Axis Communications
 * Equipment: AXIS A1001
 * Vulnerability: Heap-based Buffer Overflow


2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to execute
arbitrary code.


3. TECHNICAL DETAILS


3.1 AFFECTED PRODUCTS

The following versions of AXIS A1001, a network door controller, are affected:

 * AXIS A1001: 1.65.4 and prior


3.2 VULNERABILITY OVERVIEW

3.2.1 HEAP-BASED BUFFER OVERFLOW CWE-122(link is external)

A heap-based buffer overflow vulnerability exists in the AXIS 1001 versions
1.65.4 and prior. When communicating over the Open Supervised Device Protocol
(OSDP), the pacsiod process that handles the OSDP communication allows for
writing outside of the allocated buffer. By appending invalid data to an OSDP
message, it is possible to write data beyond the heap allocated buffer. The data
written outside the buffer could allow an attacker to execute arbitrary code.

CVE-2023-21406 has been assigned to this vulnerability. A CVSS v3 base score of
7.1 has been assigned; the CVSS vector string is
(AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H(link is external)).


3.3 BACKGROUND

 * Critical Infrastructure Sectors: Commercial Facilities
 * Countries/Areas Deployed: Worldwide
 * Company Headquarters Location: Sweden


3.4 RESEARCHER

Ariel Harush and Roy Hodir of OTORIO reported this vulnerability to AXIS
Communications.


4. MITIGATIONS

Axis has released a patched version for affected devices that fixes the
vulnerability.

Axis recommends users to update the device software. The latest Axis device
software can be found here(link is external).

For further assistance and questions, please contact AXIS Technical Support(link
is external).

For more information on this vulnerability, please visit the Axis vulnerability
management portal(link is external).

CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability. Specifically, users should:

 * Minimize network exposure for all control system devices and/or systems, and
   ensure they are not accessible from the Internet.
 * Locate control system networks and remote devices behind firewalls and
   isolate them from business networks.
 * When remote access is required, use secure methods, such as Virtual Private
   Networks (VPNs), recognizing VPNs may have vulnerabilities and should be
   updated to the most current version available. Also recognize VPN is only as
   secure as its connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment
prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices
on the ICS webpage at cisa.gov/ics. Several CISA products detailing cyber
defense best practices are available for reading and download, including
Improving Industrial Control Systems Cybersecurity with Defense-in-Depth
Strategies.

Additional mitigation guidance and recommended practices are publicly available
on the ICS webpage at cisa.gov/ics in the technical information paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies.

Organizations observing suspected malicious activity should follow established
internal procedures and report findings to CISA for tracking and correlation
against other incidents.

No known public exploits specifically target this vulnerability. This
vulnerability is not exploitable remotely. This vulnerability has a high attack
complexity.

This product is provided subject to this Notification and this Privacy &
Use policy.


PLEASE SHARE YOUR THOUGHTS

We recently updated our anonymous product survey; we’d welcome your feedback.


RELATED ADVISORIES

Jul 25, 2023
ICS Advisory | ICSA-23-206-02


ROCKWELL AUTOMATION THINMANAGER THINSERVER

Jul 25, 2023
ICS Advisory | ICSA-23-206-03


EMERSON ROC800 SERIES RTU AND DL8000 PRESET CONTROLLER

Jul 25, 2023
ICS Advisory | ICSA-23-206-04


JOHNSON CONTROLS IQ WIFI 6

Jul 20, 2023
ICS Advisory | ICSA-23-201-01


SCHNEIDER ELECTRIC ECOSTRUXURE PRODUCTS, MODICON PLCS, AND PROGRAMMABLE
AUTOMATION CONTROLLERS

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