Covert Timing Channel Affecting postquantum-feldman-vss 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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- published16 Mar 2025
- disclosed14 Mar 2025
- creditDavidOsipov
Introduced: 14 Mar 2025
CVE-2025-29780 (opens in a new tab)How to fix?
There is no fixed version for PostQuantum-Feldman-VSS.
Overview
PostQuantum-Feldman-VSS is a Post-Quantum Secure Feldman's Verifiable Secret Sharing (VSS) in Python
Affected versions of this package are vulnerable to Covert Timing Channel through the _find_secure_pivot and _secure_matrix_solve functions. An attacker can extract secret information used in the Verifiable Secret Sharing (VSS) scheme by measuring the execution time of these functions with carefully crafted inputs.
Workaround
This vulnerability can be mitigated by using the library only in environments where timing measurements by attackers are infeasible, or by implementing wrappers around critical operations using constant-time libraries in languages like Rust, Go, or C.