Headline
GHSA-7v4j-8wvr-v55r: `array!` macro is unsound when its length is impure constant
Affected versions of this crate did substitute the array length provided by an user at compile-time multiple times.
When an impure constant expression is passed as an array length (such as a result of an impure procedural macro), this can result in the initialization of an array with uninitialized types, which in turn can allow an attacker to execute arbitrary code.
The flaw was corrected in commit d5b63f72 by making sure that array length is substituted just once.
- GitHub Advisory Database
- GitHub Reviewed
- GHSA-7v4j-8wvr-v55r
`array!` macro is unsound when its length is impure constant
Moderate severity GitHub Reviewed Published Jun 16, 2022 • Updated Jun 16, 2022
Vulnerability details Dependabot alerts 0
Package
cargo array-macro (Rust)
Affected versions
< 2.1.2
Patched versions
2.1.2
Description
Affected versions of this crate did substitute the array length provided by an user at compile-time multiple times.
When an impure constant expression is passed as an array length (such as a result of an impure procedural macro), this can result in the initialization of an array with uninitialized types, which in turn can allow an attacker to execute arbitrary code.
The flaw was corrected in commit d5b63f72 by making sure that array length is substituted just once.
References
- https://github.com/rustsec/advisory-db/blob/main/crates/array-macro/RUSTSEC-2022-0017.md
- https://gitlab.com/KonradBorowski/array-macro/-/issues/5
- https://rustsec.org/advisories/RUSTSEC-2022-0017.html
Severity
Moderate
Weaknesses
No CWEs
CVE ID
No known CVE
GHSA ID
GHSA-7v4j-8wvr-v55r
Source code
https://gitlab.com/KonradBorowski/array-macro
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