System failure via port 102 heap overflow
Published Oct 12, 2021 · Updated Aug 4, 2024
Heap-based buffer overflow in Siemens SINUMERIK 828D before 4.95 allows remote attackers to cause system failure via port 102/tcp. The port 102 packet-processing path writes specially crafted packet data beyond a heap buffer because the device handles those packets incorrectly. No authentication or user interaction is required, but the attacker needs network access to the controller; successful exploitation causes total loss of availability.
Summary
What happened
Heap-based buffer overflow in Siemens SINUMERIK 828D before 4.95 allows remote attackers to cause system failure via port 102/tcp. The port 102 packet-processing path writes specially crafted packet data beyond a heap buffer because the device handles those packets incorrectly. No authentication or user interaction is required, but the attacker needs network access to the controller; successful exploitation causes total loss of availability.
The record
- CVE
- CVE-2021-37199
- Published
- Oct 12, 2021
- Updated
- Aug 4, 2024
- Vendor
- Siemens
- Product
- SINUMERIK 828D
- Classifications
- CWE-122, CWE-787, T0814
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 12, 2021CVE publishedPublication date reported by the CVE source.
- Aug 4, 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=All versions < V4.95
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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