Detections
Analytics

NewStart CGSL MAIN 6.02 : stunnel Vulnerability (NS-SA-2021-0123)

high Nessus Plugin ID 154510

Language:

Synopsis

The remote NewStart CGSL host is affected by a vulnerability.

Description

The remote NewStart CGSL host, running version MAIN 6.02, has stunnel packages installed that are affected by a vulnerability:

 - A flaw was found in stunnel before 5.57, where it improperly validates client certificates when it is configured to use both redirect and verifyChain options. This flaw allows an attacker with a certificate signed by a Certificate Authority, which is not the one accepted by the stunnel server, to access the tunneled service instead of being redirected to the address specified in the redirect option. The highest threat from this vulnerability is to confidentiality. (CVE-2021-20230)

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

Solution

Upgrade the vulnerable CGSL stunnel packages. Note that updated packages may not be available yet. Please contact ZTE for more information.

See Also

http://security.gd-linux.com/notice/NS-SA-2021-0123

http://security.gd-linux.com/info/CVE-2021-20230

Plugin Details

Severity: High

ID: 154510

File Name: newstart_cgsl_NS-SA-2021-0123_stunnel.nasl

Version: 1.2

Type: local

Published: 10/27/2021

Updated: 10/27/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2021-20230

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:zte:cgsl_main:stunnel, p-cpe:/a:zte:cgsl_main:stunnel-debuginfo, p-cpe:/a:zte:cgsl_main:stunnel-debugsource, cpe:/o:zte:cgsl_main:6

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/24/2021

Vulnerability Publication Date: 2/22/2021

Reference Information

CVE: CVE-2021-20230