Buffer Over-read Affecting cpython package, versions [,3.10.0)
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-CPYTHON-10075471
- published8 May 2025
- disclosed27 Jun 2024
- creditSeth Larson
Introduced: 27 Jun 2024
CVE-2024-5642 (opens in a new tab)How to fix?
Upgrade cpython to version 3.10.0 or higher.
Overview
Affected versions of this package are vulnerable to Buffer Over-read due to the improper configuration of SSLContext.set_npn_protocols. An attacker can configure an empty list as a value for NPN protocols.
Note: This vulnerability is of low severity due to NPN being not widely used and specifying an empty list likely being uncommon in-practice, typically a protocol name would be configured.