Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS04NzVnLW1mcDYtZzdmOc4AA4Jj

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

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.

Permalink: https://github.com/advisories/GHSA-875g-mfp6-g7f9
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS04NzVnLW1mcDYtZzdmOc4AA4Jj
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: 4 months ago
Updated: 2 months ago

CVSS Score: 5.7
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L

Identifiers: GHSA-875g-mfp6-g7f9, CVE-2023-50711
References:

• https://github.com/rust-vmm/vmm-sys-util/security/advisories/GHSA-875g-mfp6-g7f9
• https://github.com/rust-vmm/vmm-sys-util/commit/30172fca2a8e0a38667d934ee56682247e13f167
• https://nvd.nist.gov/vuln/detail/CVE-2023-50711
• https://rustsec.org/advisories/RUSTSEC-2024-0002.html
• https://lists.fedoraproject.org/archives/list/[email protected]/message/W5XMCLV2P3ANS3XN4NXZTV4PUNTLWUNJ/
• https://github.com/advisories/GHSA-875g-mfp6-g7f9

Repository: https://github.com/rust-vmm/vmm-sys-util
Blast Radius: 13.3

Affected Packages