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WS-2023-0049

Date: August 19, 2025

Ascii (crate) allows out-of-bounds array indexing in safe code. Affected version of this crate had implementation of From<&mut AsciiStr> for &mut [u8] and &mut str. This can result in out-of-bounds array indexing in safe code.

Language: RUST

Severity Score

Related Resources (6)

https://rustsec.org/advisories/RUSTSEC-2023-0015.html
https://github.com/tomprogrammer/rust-ascii/commit/8a6c7798c202766bd57d70fb8d12739dd68fb9dc
https://github.com/tomprogrammer/rust-ascii/issues/64
https://github.com/tomprogrammer/rust-ascii
https://github.com/tomprogrammer/rust-ascii/pull/63/commits/8a6c7798c202766bd57d70fb8d12739dd68fb9dc
https://www.mend.io/vulnerability-database/WS-2023-0049

Severity Score

Weakness Type (CWE)

Improper Validation of Array Index

CWE-129

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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