Detections
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Rocky Linux 8 : stunnel (RLSA-2021:0618)
high Nessus Plugin ID 184711
Synopsis
The remote Rocky Linux host is missing a security update.Description
The remote Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2021:0618 advisory.- 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
Update the affected stunnel, stunnel-debuginfo and / or stunnel-debugsource packages.See Also
Plugin Details
Severity: High
ID: 184711
File Name: rocky_linux_RLSA-2021-0618.nasl
Version: 1.0
Type: local
Published: 11/6/2023
Updated: 11/6/2023
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:rocky:linux:stunnel, p-cpe:/a:rocky:linux:stunnel-debuginfo, p-cpe:/a:rocky:linux:stunnel-debugsource, cpe:/o:rocky:linux:8
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RockyLinux/release, Host/RockyLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 2/22/2021
Vulnerability Publication Date: 2/22/2021
Reference Information
CVE: CVE-2021-20230