CVE-2021-27378 — Vulnetix

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CVE-2021-27378 PUBLISHED

An issue was discovered in the rand_core crate before 0.6.2 for Rust. Because read_u32_into and read_u64_into mishandle certain buffer-length checks, a random number generator may be seeded with too little data.

EPSS 0.47% · 64.3th percentile

Risk Scores

EPSS Score

0.47%

64.3th percentile

Affected Products

Vendor	Product	Versions
Ubuntu:25.10	rust-rand-core	0, 0.6.4-2
Ubuntu:22.04:LTS	rust-rand-core	0, 0.5.1-1, 0.6.3-2
Ubuntu:24.04:LTS	rust-rand-core	0.6.4-1, 0, 0.6.3-2
Ubuntu:20.04:LTS	rust-rand-core	0, 0.3.0-1, 0.5.1-1

Timeline

Feb 12, 2021 CVE Published
Apr 14, 2021 EPSS Score
Jun 22, 2021 EPSS Score
Aug 23, 2021 EPSS Score
Dec 25, 2021 EPSS Score
Jan 6, 2022 EPSS Score
Feb 4, 2022 EPSS Score
Feb 25, 2022 EPSS Score
Apr 1, 2022 EPSS Score
Jun 29, 2022 EPSS Score
Aug 31, 2022 EPSS Score
Nov 1, 2022 EPSS Score

References

https://ubuntu.com/security/CVE-2021-27378 third-party-advisory
https://rustsec.org/advisories/RUSTSEC-2021-0023.html third-party-advisory
https://www.cve.org/CVERecord?id=CVE-2021-27378 third-party-advisory

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