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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLW1tYzktcHdtNy1xajV3

Unaligned memory access in rand_core

Impact

Affected versions of this crate violated alignment when casting byte slices to integer slices, resulting in undefined behavior. rand_core::BlockRng::next_u64 and rand_core::BlockRng::fill_bytes are affected.

Patches

The flaw was corrected by Ralf Jung and Diggory Hardy for rand_core >= 0.4.2.

Workarounds

None.

References

See Rand's changelog.

For more information

If you have any questions or comments about this advisory, open an issue in the Rand repository.

Permalink: https://github.com/advisories/GHSA-mmc9-pwm7-qj5w
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLW1tYzktcHdtNy1xajV3
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Critical
Classification: General
Published: over 2 years ago
Updated: over 1 year ago

CVSS Score: 9.8
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Identifiers: GHSA-mmc9-pwm7-qj5w, CVE-2020-25576
References:

• https://github.com/rust-random/rand/security/advisories/GHSA-mmc9-pwm7-qj5w
• https://github.com/rust-random/rand/blob/master/rand_core/CHANGELOG.md#050---2019-06-06
• https://rustsec.org/advisories/RUSTSEC-2019-0035.html
• https://github.com/advisories/GHSA-mmc9-pwm7-qj5w

Repository: https://github.com/rust-random/rand
Blast Radius: 47.7

Affected Packages