Alpine: thunderbird: security update to 68.7.0-r0

critical Tenable Self-Hosted Container Security Plugin ID 427672

Description

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

- Under certain conditions, when running the nsDocShell destructor, a race condition can cause a use-after-
free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects
Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1. (CVE-2020-6819)

- Under certain conditions, when handling a ReadableStream, a race condition can cause a use-after-free. We
are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird <
68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1. (CVE-2020-6820)

- When reading from areas partially or fully outside the source resource with WebGL's
<code>copyTexSubImage</code> method, the specification requires the returned values be zero. Previously,
this memory was uninitialized, leading to potentially sensitive data disclosure. This vulnerability
affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75. (CVE-2020-6821)

- On 32-bit builds, an out of bounds write could have occurred when processing an image larger than 4 GB in
<code>GMPDecodeData</code>. It is possible that with enough effort this could have been exploited to run
arbitrary code. This vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75.
(CVE-2020-6822)

- Mozilla developers and community members Tyson Smith and Christian Holler reported memory safety bugs
present in Firefox 74 and Firefox ESR 68.6. Some of these bugs showed evidence of memory corruption and we
presume that with enough effort some of these could have been exploited to run arbitrary code. This
vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75. (CVE-2020-6825)

Plugin Details

Severity: Critical

ID: 427672

Version: Revision 1.3

Type: Local

Family: Alpine Linux Local Security Checks

Published: 5/16/2025

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: High

Score: 7.6

Percentile: 98.49

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.2

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

CVSS Score Source: CVE-2020-6825

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 4/7/2020

CISA Known Exploited Vulnerability Due Dates: 5/3/2022

Reference Information

CVE: CVE-2020-6819, CVE-2020-6820, CVE-2020-6821, CVE-2020-6822, CVE-2020-6825

Detections

Analytics