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Test ID:1.3.6.1.4.1.25623.1.0.844983
Category:Ubuntu Local Security Checks
Title:Ubuntu: Security Advisory for thunderbird (USN-4995-1)
Summary:The remote host is missing an update for the 'thunderbird'; package(s) announced via the USN-4995-1 advisory.
Description:Summary:
The remote host is missing an update for the 'thunderbird'
package(s) announced via the USN-4995-1 advisory.

Vulnerability Insight:
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context, an
attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, spoof the UI, bypass security restrictions,
or execute arbitrary code. (CVE-2021-23961, CVE-2021-23981,
CVE-2021-23982, CVE-2021-23987, CVE-2021-23994, CVE-2021-23998,
CVE-2021-23999, CVE-2021-29945, CVE-2021-29946, CVE-2021-29967)

It was discovered that extensions could open popup windows with control
of the window title in some circumstances. If a user were tricked into
installing a specially crafted extension, an attacker could potentially
exploit this to spoof a website and trick the user into providing
credentials. (CVE-2021-23984)

Multiple security issues were discovered in Thunderbird's OpenPGP
integration. If a user were tricked into importing a specially crafted
key in some circumstances, an attacker could potentially exploit this
to cause a denial of service (inability to send encrypted email) or
confuse the user. (CVE-2021-23991, CVE-2021-23992, CVE-2021-23993)

A use-after-free was discovered when Responsive Design Mode was
enabled. If a user were tricked into opening a specially crafted
website with Responsive Design Mode enabled, an attacker could
potentially exploit this to cause a denial of service, or execute
arbitrary code. (CVE-2021-23995)

It was discovered that Thunderbird mishandled ftp URLs with encoded
newline characters. If a user were tricked into clicking on a specially
crafted link, an attacker could potentially exploit this to send arbitrary
FTP commands. (CVE-2021-24002)

It was discovered that Thunderbird wrote signatures to disk and read them
back during verification. A local attacker could potentially exploit this
to replace the data with another signature file. (CVE-2021-29948)

It was discovered that Thunderbird might load an alternative OTR
library. If a user were tricked into copying a specially crafted
library to one of Thunderbird's search paths, an attacker could
potentially exploit this to execute arbitrary code. (CVE-2021-29949)

It was discovered that secret keys imported into Thunderbird were
stored unencrypted. A local attacker could potentially exploit this to
obtain private keys. (CVE-2021-29956)

It was discovered that Thunderbird did not indicate when an inline signed
or encrypted message contained additional unprotected parts.
(CVE-2021-29957)

Affected Software/OS:
'thunderbird' package(s) on Ubuntu 20.10, Ubuntu 20.04 LTS.

Solution:
Please install the updated package(s).

CVSS Score:
6.8

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

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2021-23961
Common Vulnerability Exposure (CVE) ID: CVE-2021-23981
Common Vulnerability Exposure (CVE) ID: CVE-2021-23982
Common Vulnerability Exposure (CVE) ID: CVE-2021-23987
Common Vulnerability Exposure (CVE) ID: CVE-2021-23994
Common Vulnerability Exposure (CVE) ID: CVE-2021-23998
Common Vulnerability Exposure (CVE) ID: CVE-2021-23999
Common Vulnerability Exposure (CVE) ID: CVE-2021-29945
Common Vulnerability Exposure (CVE) ID: CVE-2021-29946
Common Vulnerability Exposure (CVE) ID: CVE-2021-29967
Common Vulnerability Exposure (CVE) ID: CVE-2021-23984
Common Vulnerability Exposure (CVE) ID: CVE-2021-23991
Common Vulnerability Exposure (CVE) ID: CVE-2021-23992
Common Vulnerability Exposure (CVE) ID: CVE-2021-23993
Common Vulnerability Exposure (CVE) ID: CVE-2021-23995
Common Vulnerability Exposure (CVE) ID: CVE-2021-24002
Common Vulnerability Exposure (CVE) ID: CVE-2021-29948
Common Vulnerability Exposure (CVE) ID: CVE-2021-29949
Common Vulnerability Exposure (CVE) ID: CVE-2021-29956
Common Vulnerability Exposure (CVE) ID: CVE-2021-29957
CopyrightCopyright (C) 2021 Greenbone Networks GmbH

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