RUSTSEC-2024-0002

Source
https://rustsec.org/advisories/RUSTSEC-2024-0002
Import Source
https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2024-0002.json
JSON Data
https://api.osv.dev/v1/vulns/RUSTSEC-2024-0002
Aliases
Published
2024-01-02T12:00:00Z
Modified
2024-01-14T03:56:35.487615Z
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 vmm_sys_util::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
{
    "license": "CC0-1.0"
}
References

Affected packages

crates.io / vmm-sys-util

Package

Affected ranges

Type
SEMVER
Events
Introduced
0.5.0
Fixed
0.12.0

Ecosystem specific

{
    "affected_functions": null,
    "affects": {
        "os": [],
        "functions": [
            "vmm_sys_util::fam::FamStructWrapper::deserialize"
        ],
        "arch": []
    }
}

Database specific

{
    "cvss": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L",
    "informational": "unsound",
    "categories": [
        "memory-corruption"
    ]
}