CVE-2020-35889 : An issue was discovered in the crayon crate through 2020-08-31 for Rust. A TOCTO

An issue was discovered in the crayon crate through 2020-08-31 for Rust. A TOCTOU issue has a resultant memory safety violation via HandleLike.

Published 2020-12-31 10:15:17

Updated 2021-01-07 15:14:05

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2020-35889

Crayon Project » Crayon » For Rust
Versions up to, including, (<=) 0.7.0
cpe:2.3:a:crayon_project:crayon:*:*:*:*:*:rust:*:*
Matching versions

EPSS FAQ

0.21%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 59 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
6.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:P	8.6	6.4	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
8.1	HIGH	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	2.2	5.9	NIST
Attack Vector: Network Attack Complexity: High Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.

Assigned by: nvd@nist.gov (Primary)

https://rustsec.org/advisories/RUSTSEC-2020-0037.html

RUSTSEC-2020-0037: crayon: Misbehaving `HandleLike` implementation can lead to memory safety violation › RustSec Advisory Database
Third Party Advisory

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