CVE-2024-24559: Vyper sha3 codegen bug

CVE-2024-24559 · Severity: low · CVSS 3.1 · Published 2024-02-05

Vyper is a Pythonic Smart Contract Language for the EVM. There is an error in the stack management when compiling the `IR` for `sha3_64`. Concretely, the `height` variable is miscalculated. The vulnerability can't be triggered without writing the `IR` by hand (that is, it cannot be triggered from regular vyper code). `sha3_64` is used for retrieval in mappings. No flow that would cache the `key` was found so the issue shouldn't be possible to trigger when compiling the compiler-generated `IR`. This issue isn't triggered during normal compilation of vyper code so the impact is low. At the time of publication there is no patch available.

Technologies: vyper (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2024-24559 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2024-24559 being exploited in the wild.
How severe is CVE-2024-24559?
Low severity, with a CVSS score of 3.1, published 5 February 2024.
Which products and versions are affected?
vyper (PyPI) ECOSYSTEM:introduced=0,fixed=0.4.0, ECOSYSTEM:introduced=0,fixed=0.4.0b1.
Is there a fix for CVE-2024-24559?
Yes. vyper (PyPI): upgrade to 0.4.0, 0.4.0b1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2024-24559?
Check whether you run vyper (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • vyper (PyPI): upgrade to 0.4.0, 0.4.0b1 or later
    pip install "vyper>=0.4.0b1"

Affected products

  • vyper (PyPI) ECOSYSTEM:introduced=0,fixed=0.4.0, ECOSYSTEM:introduced=0,fixed=0.4.0b1

Identifiers

  • CVE-2024-24559
  • GHSA-6845-xw22-ffxv
  • PYSEC-2024-147

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