Red Hat Product Errata RHSA-2021:1192 - Security Advisory
Issued:
2021-04-14
Updated:
2021-04-14

RHSA-2021:1192 - Security Advisory

Synopsis

Moderate: thunderbird security update

Type/Severity

Security Advisory: Moderate

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

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Topic

An update for thunderbird is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 78.9.1.

Security Fix(es):

  • Mozilla: An attacker may use Thunderbird's OpenPGP key refresh mechanism to poison an existing key (CVE-2021-23991)
  • Mozilla: A crafted OpenPGP key with an invalid user ID could be used to confuse the user (CVE-2021-23992)
  • Mozilla: Inability to send encrypted OpenPGP email after importing a crafted OpenPGP key (CVE-2021-23993)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

All running instances of Thunderbird must be restarted for the update to take effect.

Affected Products

  • Red Hat Enterprise Linux Server 7 x86_64
  • Red Hat Enterprise Linux Workstation 7 x86_64
  • Red Hat Enterprise Linux Desktop 7 x86_64
  • Red Hat Enterprise Linux for Power, little endian 7 ppc64le

Fixes

  • BZ - 1948393 - CVE-2021-23991 Mozilla: An attacker may use Thunderbird's OpenPGP key refresh mechanism to poison an existing key
  • BZ - 1948394 - CVE-2021-23992 Mozilla: A crafted OpenPGP key with an invalid user ID could be used to confuse the user
  • BZ - 1948395 - CVE-2021-23993 Mozilla: Inability to send encrypted OpenPGP email after importing a crafted OpenPGP key

Red Hat Enterprise Linux Server 7

SRPM
thunderbird-78.9.1-1.el7_9.src.rpm SHA-256: a89a20e1dbaea4ba2959c3f3ab5270916554fd949f36defa122b56e247b8e1d2
x86_64
thunderbird-78.9.1-1.el7_9.x86_64.rpm SHA-256: 48af3fb67fa8f617299bbb19a46c4667e03be1555b79cd8d199a7a3d2d3ce64c
thunderbird-debuginfo-78.9.1-1.el7_9.x86_64.rpm SHA-256: 23638e40849aa1e5895eb731ee2e496f3bb062b96159465e6d0da7fac0b0499a

Red Hat Enterprise Linux Workstation 7

SRPM
thunderbird-78.9.1-1.el7_9.src.rpm SHA-256: a89a20e1dbaea4ba2959c3f3ab5270916554fd949f36defa122b56e247b8e1d2
x86_64
thunderbird-78.9.1-1.el7_9.x86_64.rpm SHA-256: 48af3fb67fa8f617299bbb19a46c4667e03be1555b79cd8d199a7a3d2d3ce64c
thunderbird-debuginfo-78.9.1-1.el7_9.x86_64.rpm SHA-256: 23638e40849aa1e5895eb731ee2e496f3bb062b96159465e6d0da7fac0b0499a

Red Hat Enterprise Linux Desktop 7

SRPM
thunderbird-78.9.1-1.el7_9.src.rpm SHA-256: a89a20e1dbaea4ba2959c3f3ab5270916554fd949f36defa122b56e247b8e1d2
x86_64
thunderbird-78.9.1-1.el7_9.x86_64.rpm SHA-256: 48af3fb67fa8f617299bbb19a46c4667e03be1555b79cd8d199a7a3d2d3ce64c
thunderbird-debuginfo-78.9.1-1.el7_9.x86_64.rpm SHA-256: 23638e40849aa1e5895eb731ee2e496f3bb062b96159465e6d0da7fac0b0499a

Red Hat Enterprise Linux for Power, little endian 7

SRPM
thunderbird-78.9.1-1.el7_9.src.rpm SHA-256: a89a20e1dbaea4ba2959c3f3ab5270916554fd949f36defa122b56e247b8e1d2
ppc64le
thunderbird-78.9.1-1.el7_9.ppc64le.rpm SHA-256: d4139988f79dc2dbea876896199bb7455ae9a5d8b940bbd45eff229849722713
thunderbird-debuginfo-78.9.1-1.el7_9.ppc64le.rpm SHA-256: ac2bd149d4b0b64abfdca03821b9b73c1c75b0ae6f60225f90bbf84b3be3456e

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.