Door-control interruption via malformed OSDP messages
Published Jul 25, 2023 · Updated Nov 8, 2024
Improper input validation in Axis door controllers and intercoms allows physically proximate attackers to interrupt door control over OSDP. The OSDP message parser accepts malformed messages and crashes the pacsiod process instead of rejecting syntactically invalid input. Access to the adjacent OSDP bus is required; the crash temporarily prevents affected doors from being opened or closed without exposing data or compromising the device.
Summary
What happened
Improper input validation in Axis door controllers and intercoms allows physically proximate attackers to interrupt door control over OSDP. The OSDP message parser accepts malformed messages and crashes the pacsiod process instead of rejecting syntactically invalid input. Access to the adjacent OSDP bus is required; the crash temporarily prevents affected doors from being opened or closed without exposing data or compromising the device.
The record
- CVE
- CVE-2023-21405
- Published
- Jul 25, 2023
- Updated
- Nov 8, 2024
- Vendor
- Axis Communications AB
- Product
- AXIS A1210-B Network Door Controller
- Classifications
- CWE-1286, CWE-754, T1499.004
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 25, 2023CVE publishedPublication date reported by the CVE source.
- Nov 8, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=AXIS OS 11.0 - 11.6.16.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo