Device crash via fragmented IP packet overflow
Published Jun 8, 2022 · Updated May 12, 2026
Buffer overflow in U-Boot IP defragmentation in Siemens RUGGEDCOM ROX before 2.17.1 allows attackers to crash devices. In __net_defragment, a fragment payload shorter than eight bytes makes fragment storage overlap hole metadata, which memcpy replaces with attacker-controlled bytes before a second fragment triggers an out-of-bounds write. Exploitation requires CONFIG_IP_DEFRAG and local-network packet delivery during U-Boot networking; the demonstrated consequence is a device crash and reset.
Summary
What happened
Buffer overflow in U-Boot IP defragmentation in Siemens RUGGEDCOM ROX before 2.17.1 allows attackers to crash devices. In __net_defragment, a fragment payload shorter than eight bytes makes fragment storage overlap hole metadata, which memcpy replaces with attacker-controlled bytes before a second fragment triggers an out-of-bounds write. Exploitation requires CONFIG_IP_DEFRAG and local-network packet delivery during U-Boot networking; the demonstrated consequence is a device crash and reset.
The record
- CVE
- CVE-2022-30552
- Published
- Jun 8, 2022
- Updated
- May 12, 2026
- Vendor
- Siemens
- Product
- RUGGEDCOM ROX RX1500
- Classifications
- CWE-120, T1499.004
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 8, 2022CVE publishedPublication date reported by the CVE source.
- May 12, 2026Record 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=0 <V2.17.1
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
- U-Boot IP Fragment Hole Overwrite proof of conceptfunctional · demonstrated
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Technologies
Your stack
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Your stack
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