Detections
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Azure Linux 3.0 Security Update: cloud-hypervisor / edk2 / hvloader / openssl / rust (CVE-2023-0286)

critical Nessus Plugin ID 215719

Synopsis

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

Description

The version of cloud-hypervisor / edk2 / hvloader / openssl / rust 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-2023-0286 advisory.

 - There is a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName.
 X.400 addresses were parsed as an ASN1_STRING but the public structure definition for GENERAL_NAME incorrectly specified the type of the x400Address field as ASN1_TYPE. This field is subsequently interpreted by the OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an ASN1_STRING. When CRL checking is enabled (i.e. the application sets the X509_V_FLAG_CRL_CHECK flag), this vulnerability may allow an attacker to pass arbitrary pointers to a memcmp call, enabling them to read memory contents or enact a denial of service. In most cases, the attack requires the attacker to provide both the certificate chain and CRL, neither of which need to have a valid signature. If the attacker only controls one of these inputs, the other input must already contain an X.400 address as a CRL distribution point, which is uncommon. As such, this vulnerability is most likely to only affect applications which have implemented their own functionality for retrieving CRLs over a network. (CVE-2023-0286)

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-2023-0286

Plugin Details

Severity: Critical

ID: 215719

File Name: azure_linux_CVE-2023-0286.nasl

Version: 1.1

Type: local

Published: 2/10/2025

Updated: 2/10/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.3

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

CVSS Score Source: CVE-2023-0286

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.4

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

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

CVSS v4

Risk Factor: Critical

Base Score: 9.3

Threat Score: 8.1

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: p-cpe:/a:microsoft:azure_linux:edk2-tools, p-cpe:/a:microsoft:azure_linux:rust, p-cpe:/a:microsoft:azure_linux:hvloader, p-cpe:/a:microsoft:azure_linux:rust-debuginfo, p-cpe:/a:microsoft:azure_linux:edk2-ovmf-xen, x-cpe:/o:microsoft:azure_linux, p-cpe:/a:microsoft:azure_linux:openssl-static, p-cpe:/a:microsoft:azure_linux:edk2-experimental, p-cpe:/a:microsoft:azure_linux:edk2-ext4, p-cpe:/a:microsoft:azure_linux:edk2-ovmf-ia32, p-cpe:/a:microsoft:azure_linux:openssl, p-cpe:/a:microsoft:azure_linux:openssl-devel, p-cpe:/a:microsoft:azure_linux:edk2-tools-python, p-cpe:/a:microsoft:azure_linux:openssl-libs, p-cpe:/a:microsoft:azure_linux:openssl-debuginfo, p-cpe:/a:microsoft:azure_linux:openssl-perl, p-cpe:/a:microsoft:azure_linux:edk2-ovmf, p-cpe:/a:microsoft:azure_linux:cloud-hypervisor, p-cpe:/a:microsoft:azure_linux:edk2-tools-doc, p-cpe:/a:microsoft:azure_linux:rust-doc

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/13/2024

Vulnerability Publication Date: 2/7/2023

Reference Information

CVE: CVE-2023-0286

IAVA: 2022-A-0518-S, 2023-A-0462-S