TencentOS Server 4: libspf2 (TSSA-2025:0149)

high Nessus Plugin ID 239527

Synopsis

The remote TencentOS Server 4 host is missing one or more security updates.

Description

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2025:0149 advisory.

Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

CVE-2023-42118:
Exim libspf2 Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows network- adjacent attackers to execute arbitrary code on affected installations of Exim libspf2. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the parsing of SPF macros. When parsing SPF macros, the process does not properly validate user-supplied data, which can result in an integer underflow before writing to memory.
An attacker can leverage this vulnerability to execute code in the context of the service account.
. Was ZDI-CAN-17578.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

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.

Plugin Details

Severity: High

ID: 239527

File Name: tencentos_TSSA_2025_0149.nasl

Version: 1.1

Type: local

Family: Tencent Local Security Checks

Published: 6/16/2025

Updated: 6/16/2025

Supported Sensors: Nessus

Vulnerability Information

CPE: p-cpe:/a:tencent:tencentos_server:libspf2, cpe:/o:tencent:tencentos_server:4

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/etc/os-release, Host/TencentOS/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 2/12/2025

Vulnerability Publication Date: 2/12/2025

Detections

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