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Test ID:
Category:Ubuntu Local Security Checks
Title:Ubuntu: Security Advisory for thunderbird (USN-4421-1)
Summary:The remote host is missing an update for the 'thunderbird'; package(s) announced via the USN-4421-1 advisory.
The remote host is missing an update for the 'thunderbird'
package(s) announced via the USN-4421-1 advisory.

Vulnerability Insight:
Multiple security issues were discovered in Thunderbird. If a user were
tricked in to opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, or execute arbitrary code. (CVE-2020-12405,
CVE-2020-12406, CVE-2020-12410, CVE-2020-12417, CVE-2020-12418,
CVE-2020-12419, CVE-2020-12420)

It was discovered that Thunderbird would continue an unencrypted
connection when configured to use STARTTLS for IMAP if the server
responded with PREAUTH. A remote attacker could potentially exploit
this to perform a person-in-the-middle attack in order to obtain
sensitive information. (CVE-2020-12398)

It was discovered that NSS showed timing differences when performing DSA
signatures. An attacker could potentially exploit this to obtain private
keys using a timing attack. (CVE-2020-12399)

It was discovered that when performing add-on updates, certificate chains
not terminating with built-in roots were silently rejected. This could
result in add-ons becoming outdated. (CVE-2020-12421)

Affected Software/OS:
'thunderbird' package(s) on Ubuntu 20.04 LTS, Ubuntu 19.10, Ubuntu 18.04 LTS, Ubuntu 16.04 LTS.

Please install the updated package(s).

CVSS Score:

CVSS Vector:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2020-12405
Common Vulnerability Exposure (CVE) ID: CVE-2020-12406
Common Vulnerability Exposure (CVE) ID: CVE-2020-12410
Common Vulnerability Exposure (CVE) ID: CVE-2020-12417
Common Vulnerability Exposure (CVE) ID: CVE-2020-12418
Common Vulnerability Exposure (CVE) ID: CVE-2020-12419
Common Vulnerability Exposure (CVE) ID: CVE-2020-12420
Common Vulnerability Exposure (CVE) ID: CVE-2020-12398
Common Vulnerability Exposure (CVE) ID: CVE-2020-12399
Common Vulnerability Exposure (CVE) ID: CVE-2020-12421
CopyrightCopyright (C) 2020 Greenbone Networks GmbH

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