Detections
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Alibaba Cloud Linux 3 : 0056: curl (ALINUX3-SA-2023:0056)

medium Nessus Plugin ID 236679

Synopsis

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

Description

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by a vulnerability as referenced in the ALINUX3-SA-2023:0056 advisory.

 Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

 CVE-2023-27535:
 An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_FTP_SSL_CCC, and CURLOPT_USE_SSL were not included in the configuration match checks, causing them to match too easily. This could lead to libcurl using the wrong credentials when performing a transfer, potentially allowing unauthorized access to sensitive information.

Tenable has extracted the preceding description block directly from the Alibaba Cloud 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.

See Also

http://mirrors.aliyun.com/alinux/3/cve/alinux3-sa-20230056.xml

Plugin Details

Severity: Medium

ID: 236679

File Name: alinux3_sa_2023-0056.nasl

Version: 1.1

Type: local

Published: 5/14/2025

Updated: 5/14/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.2

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

CVSS Score Source: CVE-2023-27535

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.3

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

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

Vulnerability Information

CPE: p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:curl-debugsource, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libcurl-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libcurl-minimal-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libcurl-debuginfo, cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libcurl, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:curl-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:curl-minimal, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:curl-doc, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:curl-minimal-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libcurl-minimal, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:curl

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/3/2023

Vulnerability Publication Date: 3/20/2023

Reference Information

CVE: CVE-2023-27535