CVE-2021-38195: RUSTSEC-2021-0076 - libsecp256k1 allows overflowing signatures

CVE-2021-38195 · Severity: low · CVSS 3.1 · Published 2021-07-13

libsecp256k1 allows overflowing signatures

Technologies: libsecp256k1 (crates.io). Vendors: crates.io.

Quick answers

Is CVE-2021-38195 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-38195 being exploited in the wild.
How severe is CVE-2021-38195?
Low severity, with a CVSS score of 3.1, published 13 July 2021.
Which products and versions are affected?
libsecp256k1 (crates.io) SEMVER:introduced=0,fixed=0.5.0, SEMVER:introduced=0.0.0-0,fixed=0.5.0.
Is there a fix for CVE-2021-38195?
Yes. libsecp256k1 (crates.io): upgrade to 0.5.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2021-38195?
Check whether you run libsecp256k1 (crates.io) 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

  • libsecp256k1 (crates.io): upgrade to 0.5.0 or later
    cargo update -p libsecp256k1

Affected products

  • libsecp256k1 (crates.io) SEMVER:introduced=0,fixed=0.5.0, SEMVER:introduced=0.0.0-0,fixed=0.5.0

Identifiers

  • CVE-2021-38195
  • GHSA-g4vj-x7v9-h82m
  • RUSTSEC-2021-0076

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