Communication interruption via guessable channel identifiers
Published Apr 7, 2022 · Updated Sep 16, 2024
Improper channel identifiers in affected CODESYS products before 3.5.18.0 or 4.5.0.0 allow remote attackers to close active channels. The communication layer draws channel IDs from a small value space, so guessed IDs let injected packets be accepted for an existing channel. No authentication or user interaction is required; successful injection terminates the targeted channel and interrupts its communication.
Summary
What happened
Improper channel identifiers in affected CODESYS products before 3.5.18.0 or 4.5.0.0 allow remote attackers to close active channels. The communication layer draws channel IDs from a small value space, so guessed IDs let injected packets be accepted for an existing channel. No authentication or user interaction is required; successful injection terminates the targeted channel and interrupts its communication.
The record
- CVE
- CVE-2022-22517
- Published
- Apr 7, 2022
- Updated
- Sep 16, 2024
- Vendor
- CODESYS GmbH
- Product
- CODESYS PLCHandler
- Classifications
- CWE-334, CWE-330, T0814
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 7, 2022CVE publishedPublication date reported by the CVE source.
- Sep 16, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=V3.5.18.0 <V3.5.18.0
What conditions does exploitation require?
What is affected?
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.
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Technologies
Your stack
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Your stack
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