Führe statische Analyse (SAST) auf der Codebasis aus und suche im Datenfluss nach dem unsicheren Muster.
CWE-1264 Base Incomplete
Hardware Logic with Insecure De-Synchronization between Control and Data Channels
This vulnerability occurs when a hardware design incorrectly forwards data before its security or permission checks have finished processing. It's a timing flaw where the data channel gets ahead of…
Definition
What is CWE-1264?
This vulnerability occurs when a hardware design incorrectly forwards data before its security or permission checks have finished processing. It's a timing flaw where the data channel gets ahead of the control channel, potentially leaking information.
Modern hardware often uses separate control and data channels to boost performance. A bug in the logic that manages errors and security can allow data to 'race ahead' and be used or observed before the system confirms it's safe to do so. This desynchronization creates a critical window where unauthorized data access can happen.
The real-world impact is a loss of data confidentiality, as seen in exploits like Meltdown. In that case, a CPU speculatively loaded privileged data for performance, assuming it could clean up all traces if the access was later deemed illegal. However, secret data remained in the microarchitectural state, proving that assumption false and allowing attackers to retrieve it.
Auswirkungen in der Praxis
Real-world CVEs caused by CWE-1264
-
Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis of the data cache.
Wie Angreifer es ausnutzen
Angreiferpfad Schritt für Schritt
- 1
Identifiziere einen Codepfad, der nicht vertrauenswürdige Eingaben ohne Validierung verarbeitet.
- 2
Erzeuge eine Payload, die das unsichere Verhalten auslöst — Injection, Traversal, Overflow oder Logik-Missbrauch.
- 3
Liefere die Payload über einen normalen Request aus und beobachte die Reaktion der Anwendung.
- 4
Iteriere, bis die Antwort Daten preisgibt, Angreifer-Code ausführt oder Berechtigungen eskaliert.
Verwundbares Codebeispiel
Vulnerable Other
There are several standard on-chip bus protocols used in modern SoCs to allow communication between components. There are a wide variety of commercially available hardware IP implementing the interconnect logic for these protocols. A bus connects components which initiate/request communications such as processors and DMA controllers (bus masters) with peripherals which respond to requests. In a typical system, the privilege level or security designation of the bus master along with the intended functionality of each peripheral determine the security policy specifying which specific bus masters can access specific peripherals. This security policy (commonly referred to as a bus firewall) can be enforced using separate IP/logic from the actual interconnect responsible for the data routing.
The firewall and data routing logic becomes de-synchronized due to a hardware logic bug allowing components that should not be allowed to communicate to share data. For example, consider an SoC with two processors. One is being used as a root of trust and can access a cryptographic key storage peripheral. The other processor (application cpu) may run potentially untrusted code and should not access the key store. If the application cpu can issue a read request to the key store which is not blocked due to de-synchronization of data routing and the bus firewall, disclosure of cryptographic keys is possible. Sicheres Codebeispiel
Secure Other
All data is correctly buffered inside the interconnect until the firewall has determined that the endpoint is allowed to receive the data. What changed: the unsafe sink is replaced (or the input is validated/escaped) so the same payload no longer triggers the weakness.
Präventions-Checkliste
How to prevent CWE-1264
- Architecture and Design Thoroughly verify the data routing logic to ensure that any error handling or security checks effectively block illegal dataflows.
Erkennungssignale
How to detect CWE-1264
Führe dynamische Application-Security-Tests gegen den Live-Endpoint aus.
Beobachte Runtime-Logs auf ungewöhnliche Exception-Traces, fehlerhafte Eingaben oder Versuche, Autorisierung zu umgehen.
Code Review: Markiere jeden neuen Code, der Eingaben von dieser Oberfläche ohne validierte Framework-Helper verarbeitet.
Plexicus erkennt CWE-1264 automatisch und öffnet in unter 60 Sekunden einen Fix-PR.
Codex Remedium scannt jeden Commit, identifiziert genau diese Schwachstelle und liefert einen reviewer-ready Pull Request mit dem Patch. Keine Tickets. Keine Hand-offs.
Häufig gestellte Fragen Was ist CWE-1264?
Wie gravierend ist CWE-1264?
Welche Sprachen oder Plattformen sind von CWE-1264 betroffen?
Wie kann ich CWE-1264 verhindern?
Wie erkennt und behebt Plexicus CWE-1264?
Wo erfahre ich mehr über CWE-1264?
Frequently asked questions
Was ist CWE-1264?
This vulnerability occurs when a hardware design incorrectly forwards data before its security or permission checks have finished processing. It's a timing flaw where the data channel gets ahead of the control channel, potentially leaking information.
Wie gravierend ist CWE-1264?
MITRE hat für diese Schwachstelle keine Exploit-Wahrscheinlichkeit veröffentlicht. Behandle sie als mittlere Auswirkung, bis dein Threat Model anderes belegt.
Welche Sprachen oder Plattformen sind von CWE-1264 betroffen?
MITRE lists the following affected platforms: Not OS-Specific, Not Architecture-Specific, Not Technology-Specific.
Wie kann ich CWE-1264 verhindern?
Thoroughly verify the data routing logic to ensure that any error handling or security checks effectively block illegal dataflows.
Wie erkennt und behebt Plexicus CWE-1264?
Die SAST-Engine von Plexicus erkennt die Datenfluss-Signatur von CWE-1264 bei jedem Commit. Bei einem Treffer öffnet unser Codex-Remedium-Agent einen Fix-PR mit korrigiertem Code, Tests und einer einzeiligen Zusammenfassung für den Reviewer.
Wo erfahre ich mehr über CWE-1264?
MITRE veröffentlicht die kanonische Definition unter https://cwe.mitre.org/data/definitions/1264.html. Für ergänzende Hinweise kannst du auch die OWASP- und NIST-Dokumentation heranziehen.
Verwandte Schwachstellen
Weaknesses related to CWE-1264
CWE-821 Parent
Incorrect Synchronization
This vulnerability occurs when multiple parts of a program, such as threads or processes, access a shared resource like a variable, file,…
CWE-1088 Sibling
Synchronous Access of Remote Resource without Timeout
This vulnerability occurs when an application makes a synchronous call to a remote service or resource but does not set a timeout, or sets…
CWE-572 Sibling
Call to Thread run() instead of start()
This vulnerability occurs when a program incorrectly calls a thread's `run()` method directly, instead of using the `start()` method. This…
CWE-574 Sibling
EJB Bad Practices: Use of Synchronization Primitives
This vulnerability occurs when an Enterprise JavaBeans (EJB) component improperly uses thread synchronization primitives, violating the…
CWE-1037 Peer
Processor Optimization Removal or Modification of Security-critical Code
This vulnerability occurs when a processor's performance optimization unintentionally strips out or alters security-critical code that a…
Ressourcen
Further reading
Bereit, wenn du es bist
Schluss mit dem Bezahlen pro Entwickler.
Schließ den Kreislauf.
Plexicus ist die KI-native ASPM, die scannt, filtert, fixt, pentestet und erklärt — autonom. Unbegrenzte Entwickler, unbegrenzte Repos, Fair-Use-KI-Aktionen. Echter kostenloser Tarif, €269/mo jährlich, wenn du bereit bist.