Information Exposure Through Discrepancy Affecting wolfSSL/wolfssh package, versions [,5.7.2)
Threat Intelligence
Exploit maturity not defined.
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-UNMANAGED-WOLFSSLWOLFSSH-7850355
- published29 Aug 2024
- disclosed27 Aug 2024
- creditLuca Wilke, Florian Sieck and Thomas Eisenbarth (University of Lübeck)
Introduced: 27 Aug 2024
CVE-2024-1544 (opens in a new tab)How to fix?
Upgrade wolfSSL/wolfssh to version 5.7.2 or higher.
Overview
Affected versions of this package are vulnerable to Information Exposure Through Discrepancy through the modular reduction process used in generating the ECDSA nonce. An attacker can infer the nonce's most significant bits by observing the decrementing behavior of the estimated factor during the reduction, potentially leading to the reconstruction of the nonce using lattice reduction methods. This is only exploitable if the attacker has access to observe the control-flow revealing side-channel.