Integer Underflow (Wrap or Wraparound) Affecting nasa/CryptoLib package, versions [,1.4.0)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published19 May 2025
- disclosed1 Apr 2025
- creditmirkobitetto
Introduced: 1 Apr 2025
CVE-2025-30356 (opens in a new tab)How to fix?
Upgrade nasa/CryptoLib to version 1.4.0 or higher.
Overview
Affected versions of this package are vulnerable to Integer Underflow (Wrap or Wraparound) due to an incomplete validation check on the fl field. An attacker can execute arbitrary code or cause a crash by crafting malicious frames that manipulate the tf_payload_len to be interpreted as a large unsigned value, leading to a heap buffer overflow during a memcpy operation.