CVE-2020-35865

High

An issue was discovered in the os_str_bytes crate before 2.0.0 for Rust. It has false expectations about char::from_u32_unchecked behavior.

mitre·NVD-CWE-noinfo·Published 2020-12-31

CVSS

7.5

EPSS

0.01

KEV

Exploits

cve.orgen

139 chars

An issue was discovered in the os_str_bytes crate before 2.0.0 for Rust. It has false expectations about char::from_u32_unchecked behavior.

NVDen

139 chars

An issue was discovered in the os_str_bytes crate before 2.0.0 for Rust. It has false expectations about char::from_u32_unchecked behavior.

The Windows implementation of this crate relied on the behavior of `std::char::from_u32_unchecked` when its safety clause is violated. Even though this worked with Rust versions up to 1.42 (at least), that behavior could change with any new Rust version, possibly leading a security issue. The flaw was corrected in version 2.0.0.

GHSAen

329 chars

The Windows implementation of this crate relied on the behavior of std::char::from_u32_unchecked when its safety clause is violated. Even though this worked with Rust versions up to 1.42 (at least), that behavior could change with any new Rust version, possibly leading a security issue. The flaw was corrected in version 2.0.0.

NVDes

185 chars

Se detectó un problema en la crate os_str_bytes versiones anteriores a 2.0.0 para Rust. Presenta falsas expectativas sobre el comportamiento de la función char::from_u32_unchecked.

CVSS metrics across sources

Version	Type	Source	Base	Exp	Impact	Vector
2.0	Primary	NVD	5.0	10.0	2.9	AV:N/AC:L/Au:N/C:N/I:N/A:P
3.1	Primary	NVD	7.5	3.9	3.6	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1	Secondary	GHSA	7.5	—	—	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H