Vulnerability CVE-2020-36323
Published: 2021-04-14

Description:
In the standard library in Rust before 1.50.3, 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.

Type:

CWE-134

 (Uncontrolled Format String)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.4/10
4.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
Partial
Affected software
Rust-lang -> RUST 

 References:
https://github.com/rust-lang/rust/issues/80335
https://github.com/rust-lang/rust/pull/81728
https://github.com/rust-lang/rust/pull/81728#issuecomment-821549174
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