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CVE-2020-35862: Use after free and double free in bitvec

August 25, 2021

An issue was discovered in the bitvec crate before 0.17.4 for Rust. BitVec to BitBox conversion leads to a use-after-free or double free.

References

  • github.com/advisories/GHSA-7cjc-hvxf-gqh7
  • github.com/myrrlyn/bitvec
  • github.com/myrrlyn/bitvec/issues/55
  • nvd.nist.gov/vuln/detail/CVE-2020-35862
  • rustsec.org/advisories/RUSTSEC-2020-0007.html

Code Behaviors & Features

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Affected versions

All versions starting from 0.11.0 before 0.17.4

Fixed versions

  • 0.17.4

Solution

Upgrade to version 0.17.4 or above.

Impact 9.8 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-415: Double Free
  • CWE-416: Use After Free

Source file

cargo/bitvec/CVE-2020-35862.yml

Spotted a mistake? Edit the file on GitLab.

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