CVE-2020-25793: sized-chunks - Array Size Not Checked in Sized-Chunks
Summary
CVE-2020-25791: Array size is not checked in sized-chunks. Affects sized-chunks versions < 0.6.3. Fixed in 0.6.3. How to fix ↓
Also tracked for
- rust-sized-chunks · Debian:11
- rust-sized-chunks · Debian:11
- rust-sized-chunks · Debian:11
- rust-sized-chunks · Debian:11
- rust-sized-chunks · Debian:11
- rust-sized-chunks · Debian:11
The same CVE-2020-25791 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
sized-chunks is a crate for Rust that provides a Chunk implementation. It allows for the construction of chunks with a specific size. The Chunk implementation is used to manage arrays of elements. However, in versions up to 0.6.2, the array size is not properly checked when constructed with From<InlineArray<A, T>>.
Vulnerability Detail
The vulnerability (CVE-2020-25793) in sized-chunks arises from the lack of array size validation in the Chunk implementation. This oversight can lead to potential memory corruption or buffer overflow issues. An attacker could exploit this vulnerability to execute arbitrary code, cause a denial of service, or gain unauthorized access to sensitive information. The vulnerability has a CVSS score of 7.5, indicating a high severity level.
How To Fix
Latest published version: 0.7.0 as of 22 Oct 2026
Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
0.6.3
This is the first release that contains the fix.
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Workaround
As a workaround, developers can manually validate the array size before constructing a Chunk object. Here is an example of how to perform the size check:
use sized_chunks::Chunk;
fn create_chunk<T>(data: &[T]) -> Chunk<T> {
assert!(data.len() <= Chunk::<T>::MAX_SIZE);
Chunk::from(data)
}
Conclusion
In conclusion, the sized-chunks crate for Rust is vulnerable to an array size validation issue. This vulnerability can have severe consequences, including memory corruption and unauthorized access. It is crucial to update the crate to version 0.6.3 or later to mitigate the vulnerability. For further assistance with vulnerability remediation, contact DevNack.com.
See every vulnerability recorded for sized-chunks →
FAQ
sized-chunks is a crate for Rust that provides a Chunk implementation used to manage arrays of elements with a specific size.
The vulnerability in sized-chunks can lead to memory corruption, buffer overflow, arbitrary code execution, denial of service, or unauthorized access to sensitive information.
The CVSS score of this vulnerability is 7.5, indicating a high severity level.
To fix this vulnerability, update the sized-chunks crate to version 0.6.3 or later by modifying the Cargo.toml file and running 'cargo update' command.
Yes, developers can manually validate the array size before constructing a Chunk object. Refer to the 'workaround' section for an example.
Related vulnerabilities
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