Always-Incorrect Control Flow Implementation Affecting github.com/btcsuite/btcd/txscript package, versions >=0.20.0-beta <0.24.2
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-GOLANG-GITHUBCOMBTCSUITEBTCDTXSCRIPT-8184988
- published13 Oct 2024
- disclosed11 Oct 2024
- creditNiklas Gögge, Antoine Poinsot
Introduced: 11 Oct 2024
CVE-2024-38365 (opens in a new tab)How to fix?
Upgrade github.com/btcsuite/btcd/txscript to version 0.24.2 or higher.
Overview
Affected versions of this package are vulnerable to Always-Incorrect Control Flow Implementation through the removeOpcodeByData function, which incorrectly removes any data push from the executed script that contains the signature, unlike the intended behavior of only removing exact matches.
Exploiting this vulnerability is possible by using public key recovery to create a script containing a signature check and an extraneous data push, which, when committed to in a P2SH output and spent by a standard transaction, would be considered valid by compliant nodes but invalid by affected ones.