Service interruption via predictable IP identification values
Published Jun 11, 2024 · Updated Aug 2, 2024
Use of insufficiently random values in Siemens SIMATIC S7-200 SMART CPUs allows remote attackers to interrupt service over IP networks. The devices emit predictable IPv4 identification sequence values, enabling attacks that depend on forecasting packet identifiers. No authentication or user interaction is required; successful exploitation exposes limited information and interrupts controller availability.
Summary
What happened
Use of insufficiently random values in Siemens SIMATIC S7-200 SMART CPUs allows remote attackers to interrupt service over IP networks. The devices emit predictable IPv4 identification sequence values, enabling attacks that depend on forecasting packet identifiers. No authentication or user interaction is required; successful exploitation exposes limited information and interrupts controller availability.
The record
- CVE
- CVE-2024-35292
- Published
- Jun 11, 2024
- Updated
- Aug 2, 2024
- Vendor
- Siemens
- Product
- SIMATIC S7-200 SMART CPU ST20
- Classifications
- CWE-330, T0814
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 11, 2024CVE publishedPublication date reported by the CVE source.
- Aug 2, 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?
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- Affected versionversion=0 <*
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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