Führe statische Analyse (SAST) auf der Codebasis aus und suche im Datenfluss nach dem unsicheren Muster.
CWE-1279 Base Incomplete
Cryptographic Operations are run Before Supporting Units are Ready
This vulnerability occurs when cryptographic processes start before their required dependencies are properly initialized and ready to supply valid data, potentially compromising security.
Definition
What is CWE-1279?
This vulnerability occurs when cryptographic processes start before their required dependencies are properly initialized and ready to supply valid data, potentially compromising security.
Cryptographic hardware often relies on other system components to function securely. For example, an encryption module might need a true random number generator for entropy or require keys from a secure storage unit. If crypto operations begin before these supporting units are fully operational—like reading keys from an uninitialized fuse bank or using predictable values from a not-yet-ready RNG—the cryptographic output becomes weak or predictable, undermining the entire security mechanism.
Developers must implement explicit readiness checks and proper initialization sequences before invoking any cryptographic functions. This means verifying that entropy sources are producing true randomness, key storage is accessible, and all hardware dependencies are in a secure state. Failing to enforce this dependency chain creates a race condition where crypto operations execute with invalid or default inputs, leading to easily breakable encryption, weak keys, or other cryptographic failures that attackers can exploit.
Auswirkungen in der Praxis
Real-world CVEs caused by CWE-1279
Bisher sind in MITREs Katalog keine öffentlichen CVE-Referenzen mit dieser CWE verknüpft.
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 Pseudocode
The following pseudocode illustrates the weak encryption resulting from the use of a pseudo-random-number generator output.
If random_number_generator_self_test_passed() == TRUE
then Seed = get_random_number_from_RNG()
else Seed = hardcoded_number Sicheres Codebeispiel
Secure Pseudocode
In the example above, first a check of RNG ready is performed. If the check fails, the RNG is ignored and a hard coded value is used instead. The hard coded value severely weakens the encrypted output.
If random_number_generator_self_test_passed() == TRUE
then Seed = get_random_number_from_RNG()
else enter_error_state() 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-1279
- Architecture and Design Best practices should be used to design cryptographic systems.
- Implementation Continuously ensuring that cryptographic inputs are supplying valid information is necessary to ensure that the encrypted output is secure.
Erkennungssignale
How to detect CWE-1279
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.
CWE-1279
Don't catalog this weakness. Prove it's reachable.
Plexicus turns CWE catalogs into evidence: every CWE-pattern is matched against your real code graph, reach is proven on a sandbox clone, and verified findings ship as reviewed PRs.
Häufig gestellte Fragen Was ist CWE-1279?
Wie gravierend ist CWE-1279?
Welche Sprachen oder Plattformen sind von CWE-1279 betroffen?
Wie kann ich CWE-1279 verhindern?
Wie erkennt und behebt Plexicus CWE-1279?
Wo erfahre ich mehr über CWE-1279?
Frequently asked questions
Was ist CWE-1279?
This vulnerability occurs when cryptographic processes start before their required dependencies are properly initialized and ready to supply valid data, potentially compromising security.
Wie gravierend ist CWE-1279?
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-1279 betroffen?
MITRE lists the following affected platforms: Verilog, VHDL, Not OS-Specific, Not Architecture-Specific, Processor Hardware, Not Technology-Specific.
Wie kann ich CWE-1279 verhindern?
Best practices should be used to design cryptographic systems. Continuously ensuring that cryptographic inputs are supplying valid information is necessary to ensure that the encrypted output is secure.
Wie erkennt und behebt Plexicus CWE-1279?
Die SAST-Engine von Plexicus erkennt die Datenfluss-Signatur von CWE-1279 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-1279?
MITRE veröffentlicht die kanonische Definition unter https://cwe.mitre.org/data/definitions/1279.html. Für ergänzende Hinweise kannst du auch die OWASP- und NIST-Dokumentation heranziehen.
Verwandte Schwachstellen
Weaknesses related to CWE-1279
CWE-696 Parent
Incorrect Behavior Order
This weakness occurs when a system executes multiple dependent actions in the wrong sequence, leading to unexpected and potentially…
CWE-1190 Sibling
DMA Device Enabled Too Early in Boot Phase
This vulnerability occurs when a device with Direct Memory Access (DMA) capability is activated before the system's security settings are…
CWE-1193 Sibling
Power-On of Untrusted Execution Core Before Enabling Fabric Access Control
This vulnerability occurs when a system powers up hardware components containing untrusted firmware before establishing critical security…
CWE-1280 Sibling
Access Control Check Implemented After Asset is Accessed
This vulnerability occurs when a hardware-based security check runs after the protected resource has already been accessed, creating a…
CWE-179 Sibling
Incorrect Behavior Order: Early Validation
This vulnerability occurs when an application validates user input before applying security filters or data normalization. Attackers can…
CWE-408 Sibling
Incorrect Behavior Order: Early Amplification
This vulnerability occurs when a system allows a user to trigger a resource-intensive operation before verifying their identity or…
CWE-551 Sibling
Incorrect Behavior Order: Authorization Before Parsing and Canonicalization
This vulnerability occurs when a web server checks access permissions before fully processing and normalizing a URL, potentially allowing…
Ressourcen
Further reading
Bereit, das Wesentliche zu validieren?
Bereit zu validieren, was zählt.
Plexicus ist Proof-Driven AppSec: validierte Funde, kontextuelles Verständnis und geprüfte Remediation — in Evidenz verankert, mit Ihnen gescoped.