CWE-347: Improper Verification of Cryptographic Signature
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
How it's found
Improper Verification of Cryptographic Signature is typically found by tracing untrusted input from where it enters the system to the point where it is used without the check or neutralization this weakness describes, combining manual code review with dynamic testing.
Consequences
- Gain Privileges or Assume Identity, Modify Application Data, Execute Unauthorized Code or Commands: An attacker could gain access to sensitive data and possibly execute unauthorized code.
How TurboPentest tests for this (white-box)
This weakness (Improper Verification of Cryptographic Signature) is caught by white-box static analysis when you connect a GitHub repo: IntegSec's Opengrep SAST rule pack carries 7 rules for it, flagging the issue directly in your source code as part of the pentest.
Frequently asked questions
What is CWE-347?
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
How do you find Improper Verification of Cryptographic Signature?
Improper Verification of Cryptographic Signature is typically found by tracing untrusted input from where it enters the system to the point where it is used without the check or neutralization this weakness describes, combining manual code review with dynamic testing.
What is the impact of CWE-347?
Gain Privileges or Assume Identity, Modify Application Data, Execute Unauthorized Code or Commands: An attacker could gain access to sensitive data and possibly execute unauthorized code.
Does TurboPentest test for Improper Verification of Cryptographic Signature?
This weakness (Improper Verification of Cryptographic Signature) is caught by white-box static analysis when you connect a GitHub repo: IntegSec's Opengrep SAST rule pack carries 7 rules for it, flagging the issue directly in your source code as part of the pentest.
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Written and reviewed by
Michel Chamberland - Founder & CEO, IntegSec
CISSP, OSCP, OSCE, CEH, GIAC, CCSK · 20+ years in offensive security
Michel has spent 20+ years on offensive security teams including IBM X-Force Red and Trustwave SpiderLabs, leading penetration tests, red team engagements, and breach response for Fortune 500 customers. He is the founder of IntegSec and the architect of TurboPentest.
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