GHSA-875g-mfp6-g7f9

Source

https://github.com/advisories/GHSA-875g-mfp6-g7f9

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/01/GHSA-875g-mfp6-g7f9/GHSA-875g-mfp6-g7f9.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-875g-mfp6-g7f9

Aliases

Published

2024-01-02T16:28:08Z

Modified

2024-02-10T03:30:19Z

Severity

5.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L CVSS Calculator

Summary

`serde` deserialization for `FamStructWrapper` lacks bound checks that could potentially lead to out-of-bounds memory access

Details

Impact

An issue was discovered in the FamStructWrapper::deserialize implementation provided by the crate for vmmsysutil::fam::FamStructWrapper, which can lead to out of bounds memory accesses. The deserialization does not check that the length stored in the header matches the flexible array length. Mismatch in the lengths might allow out of bounds memory access through Rust-safe methods.

Impacted versions: >= 0.5.0

Patches

The issue was corrected in version 0.12.0 by inserting a check that verifies the lengths of compared flexible arrays are equal for any deserialized header and aborting deserialization otherwise. Moreover, the API was changed so that header length can only be modified through Rust-unsafe code. This ensures that users cannot trigger out-of-bounds memory access from Rust-safe code.

Database specific

{
    "nvd_published_at": "2024-01-02T20:15:10Z",
    "cwe_ids": [
        "CWE-787"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2024-01-02T16:28:08Z"
}

References

Affected packages

crates.io / vmm-sys-util

Package

Name: vmm-sys-util; View open source insights on deps.dev
Purl: pkg:cargo/vmm-sys-util

Affected ranges

Type: SEMVER
Events: Introduced

0.5.0

Fixed

0.12.0