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Azure Linux 3.0 Security Update: cloud-hypervisor / kata-containers / kata-containers-cc (CVE-2023-50711)

critical Nessus Plugin ID 237402

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Synopsis

The remote Azure Linux host is missing one or more security updates.

Description

The version of cloud-hypervisor / kata-containers / kata-containers-cc installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2023-50711 advisory.

 - vmm-sys-util is a collection of modules that provides helpers and utilities used by multiple rust-vmm components. Starting in version 0.5.0 and prior to version 0.12.0, an issue in the `FamStructWrapper::deserialize` implementation provided by the crate for `vmm_sys_util::fam::FamStructWrapper` 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. 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. (CVE-2023-50711)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://nvd.nist.gov/vuln/detail/CVE-2023-50711

Plugin Details

Severity: Critical

ID: 237402

File Name: azure_linux_CVE-2023-50711.nasl

Version: 1.1

Type: local

Published: 5/28/2025

Updated: 5/28/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2023-50711

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:microsoft:azure_linux:kata-containers, p-cpe:/a:microsoft:azure_linux:kata-containers-cc, p-cpe:/a:microsoft:azure_linux:cloud-hypervisor, x-cpe:/o:microsoft:azure_linux, p-cpe:/a:microsoft:azure_linux:kata-containers-tools, p-cpe:/a:microsoft:azure_linux:kata-containers-cc-tools

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/AzureLinux/release, Host/AzureLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 5/13/2025

Vulnerability Publication Date: 1/2/2024

Reference Information

CVE: CVE-2023-50711