Scientific Linux Security Update : thunderbird on SL7.x i686/x86_64 (2020:5235)

high Nessus Plugin ID 143359
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote Scientific Linux host is missing one or more security updates.


The remote Scientific Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the SLSA-2020:5235-1 advisory.

- Mozilla: Parsing mismatches could confuse and bypass security sanitizer for chrome privileged code (CVE-2020-26951)

- Mozilla: Memory safety bugs fixed in Firefox 83 and Firefox ESR 78.5 (CVE-2020-26968)

- Mozilla: Variable time processing of cross-origin images during drawImage calls (CVE-2020-16012)

- Mozilla: Fullscreen could be enabled without displaying the security UI (CVE-2020-26953)

- Mozilla: XSS through paste (manual and clipboard API) (CVE-2020-26956)

- Mozilla: Requests intercepted through ServiceWorkers lacked MIME type restrictions (CVE-2020-26958)

- Mozilla: Use-after-free in WebRequestService (CVE-2020-26959)

- Mozilla: Potential use-after-free in uses of nsTArray (CVE-2020-26960)

- Mozilla: DoH did not filter IPv4 mapped IP Addresses (CVE-2020-26961)

- Mozilla: Software keyboards may have remembered typed passwords (CVE-2020-26965)

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 and / or thunderbird-debuginfo packages.

See Also

Plugin Details

Severity: High

ID: 143359

File Name: sl_20201130_thunderbird_on_SL7_x.nasl

Version: 1.4

Type: local

Agent: unix

Published: 11/30/2020

Updated: 12/11/2020

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2020-26968


Risk Factor: High

Score: 7.4


Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

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

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


Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

Vulnerability Information

CPE: cpe:/o:fermilab:scientific_linux, p-cpe:/a:fermilab:scientific_linux:thunderbird, p-cpe:/a:fermilab:scientific_linux:thunderbird-debuginfo

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/30/2020

Vulnerability Publication Date: 11/17/2020

Reference Information

CVE: CVE-2020-16012, CVE-2020-26951, CVE-2020-26953, CVE-2020-26956, CVE-2020-26958, CVE-2020-26959, CVE-2020-26960, CVE-2020-26961, CVE-2020-26965, CVE-2020-26968