Rocky Linux 8 : thunderbird (RLSA-2021:3838)

medium Nessus Plugin ID 157839


The remote Rocky Linux host is missing a security update.


The remote Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2021:3838 advisory.

- Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection. A MITM could perform a downgrade attack to intercept transmitted messages, or could take control of the authenticated session to execute SMTP commands chosen by the MITM. If an unprotected authentication method was configured, the MITM could obtain the authentication credentials, too. This vulnerability affects Thunderbird < 91.2. (CVE-2021-38502)

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


Update the affected thunderbird, thunderbird-debuginfo and / or thunderbird-debugsource packages.

See Also

Plugin Details

Severity: Medium

ID: 157839

File Name: rocky_linux_RLSA-2021-3838.nasl

Version: 1.4

Type: local

Published: 2/9/2022

Updated: 3/8/2022

Risk Information


Risk Factor: Medium

Score: 4.4


Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2021-38502


Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

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

Vulnerability Information

CPE: p-cpe:/a:rocky:linux:thunderbird, p-cpe:/a:rocky:linux:thunderbird-debuginfo, p-cpe:/a:rocky:linux:thunderbird-debugsource, cpe:/o:rocky:linux:8

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/20/2021

Vulnerability Publication Date: 10/6/2021

Reference Information

CVE: CVE-2021-38502

RLSA: 2021:3838

IAVA: 2021-A-0461-S