Improper Protection of Physical Side Channels Affecting wolfssl package, versions [0,]
Threat Intelligence
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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Test your applications- Snyk IDSNYK-CONAN-WOLFSSL-11343415
- published31 Jul 2025
- disclosed18 Jul 2025
- creditAllan Delautre, Laurent Sauvage, Arnaud Varillon
Introduced: 18 Jul 2025
NewCVE-2025-7396 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Improper Protection of Physical Side Channels via the Curve25519 private key operations. An attacker can extract sensitive private key information by performing side-channel analysis on devices that are susceptible to physical access or observation.
Notes:
The option of hardening the C implementation of Curve25519 private key operations was added with the addition of blinding support in v5.8.0; however, it was not enabled.
The blinding configure option is only for the base C implementation of Curve25519. It is not needed, or available with ARM assembly builds, Intel assembly builds, and the small Curve25519 feature.