CVE-2020-36323
High
Description
In the standard library in Rust before 1.52.0, there is an optimization for joining strings that can cause uninitialized bytes to be exposed (or the program to crash) if the borrowed string changes after its length is checked.
SeverityHigh
CVSS8.2
Exploit probability—
Product
Rust
PublishedApr 14, 2021
First seenApr 14, 2021
How to fix
Update
- rust-lang rust1.52.0 or later
Vendor advisories
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CZ337CM4GFJLRDFVQCGC7J25V65JXOG5/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VZG65GUW6Z2CYOQHF7T3TB5CZKIX6ZJE/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TFUO3URYCO73D2Q4WYJBWAMJWGGVXQO4/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| rust-lang rust | v < 1.52.0 | 1.52.0 |
| fedoraproject fedora | 32, 33, 34 | — |
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