CVE-2023-50428 — In Bitcoin Core through 26
In Bitcoin Core through 26.0 and Bitcoin Knots before 25.1.knots20231115, datacarrier size limits can be bypassed by obfuscating data as code (e.g., with OP_FALSE OP_IF), as exploited in the wild by Inscriptions in 2022 and 2023. NOTE: although this is a vulnerability from the pe
Published
2023-12-09T00:00:00.000Z
Last modified
2024-08-02T22:16:46.327Z
01What is this vulnerability?
In Bitcoin Core through 26.0 and Bitcoin Knots before 25.1.knots20231115, datacarrier size limits can be bypassed by obfuscating data as code (e.g., with OP_FALSE OP_IF), as exploited in the wild by Inscriptions in 2022 and 2023. NOTE: although this is a vulnerability from the perspective of the Bitcoin Knots project, some others consider it "not a bug."
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2023-12-09T00:00:00.000Z
- Last modified: 2024-08-02T22:16:46.327Z
09References
- en.bitcoin.it — https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures
- twitter.com — https://twitter.com/LukeDashjr/status/1732204937466032285
- github.com — https://github.com/bitcoin/bitcoin/pull/28408#issuecomment-1844981799
- github.com — https://github.com/bitcoinknots/bitcoin/blob/aed49ce8989334c364a219a6eb016a3897d…
- github.com — https://github.com/bitcoin/bitcoin/tags
- github.com — https://github.com/bitcoin/bitcoin/blob/65c05db660b2ca1d0076b0d8573a6760b3228068…
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