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Curl 8.5.0 < 8.7.0 TLS Certificate Check Bypass (CVE-2024-2466)

medium Nessus Plugin ID 192706

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Synopsis

The remote host has a program that is affected by a certificate check bypass vulnerability.

Description

The version of Curl installed on the remote host is between 8.5.0 and prior to 8.7.0. It is, therefore, affected by a certificate check bypass vulnerability. libcurl did not check the server certificate of TLS connections done to a host specified as an IP address, when built to use mbedTLS. libcurl would wrongly avoid using the set hostname function when the specified hostname was given as an IP address, therefore completely skipping the certificate check. This affects all uses of TLS protocols (HTTPS, FTPS, IMAPS, POPS3, SMTPS, etc).

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

Solution

Upgrade Curl to version 8.7.0 or later

See Also

https://curl.se/docs/CVE-2024-2466.html

Plugin Details

Severity: Medium

ID: 192706

File Name: curl_CVE-2024-2466.nasl

Version: 1.6

Type: local

Agent: windows, macosx, unix

Family: Misc.

Published: 3/29/2024

Updated: 7/31/2025

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.3

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.5

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

CVSS Score Source: CVE-2024-2466

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

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

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

Vulnerability Information

CPE: cpe:/a:haxx:curl

Required KB Items: installed_sw/Curl

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/27/2024

Vulnerability Publication Date: 3/27/2024

Reference Information

CVE: CVE-2024-2466

IAVA: 2024-A-0185-S