Cross-session tracking via predictable network headers
Published Jan 30, 2025 · Updated Feb 24, 2025
Predictable network-header values in Google gVisor allow remote attackers to track sandboxed workloads across network sessions. The network stack uses a global counter for TCP source ports and hash-indexed counters with small keys for IP fragment IDs, enabling attacker-controlled traffic to reveal collisions and predict values. The demonstrated attack requires network access and repeated samples; it exposes stable identifiers for tracking, while packet forgery and blind resets were not demonstrated.
Summary
What happened
Predictable network-header values in Google gVisor allow remote attackers to track sandboxed workloads across network sessions. The network stack uses a global counter for TCP source ports and hash-indexed counters with small keys for IP fragment IDs, enabling attacker-controlled traffic to reveal collisions and predict values. The demonstrated attack requires network access and repeated samples; it exposes stable identifiers for tracking, while packet forgery and blind resets were not demonstrated.
The record
- CVE
- CVE-2024-10603
- Published
- Jan 30, 2025
- Updated
- Feb 24, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-340
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 30, 2025CVE publishedPublication date reported by the CVE source.
- Feb 24, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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
- NDSS device-tracking proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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