RedHat: RHSA-2021-1193:01 Moderate: thunderbird security update
Summary
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.
Summary
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.
References
https://access.redhat.com/security/cve/CVE-2021-23991 https://access.redhat.com/security/cve/CVE-2021-23992 https://access.redhat.com/security/cve/CVE-2021-23993 https://access.redhat.com/security/updates/classification/#moderate
Package List
Red Hat Enterprise Linux AppStream (v. 8):
Source:
thunderbird-78.9.1-1.el8_3.src.rpm
aarch64:
thunderbird-78.9.1-1.el8_3.aarch64.rpm
thunderbird-debuginfo-78.9.1-1.el8_3.aarch64.rpm
thunderbird-debugsource-78.9.1-1.el8_3.aarch64.rpm
ppc64le:
thunderbird-78.9.1-1.el8_3.ppc64le.rpm
thunderbird-debuginfo-78.9.1-1.el8_3.ppc64le.rpm
thunderbird-debugsource-78.9.1-1.el8_3.ppc64le.rpm
x86_64:
thunderbird-78.9.1-1.el8_3.x86_64.rpm
thunderbird-debuginfo-78.9.1-1.el8_3.x86_64.rpm
thunderbird-debugsource-78.9.1-1.el8_3.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
Topic
An update for thunderbird is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, x86_64
Bugs Fixed
1948393 - CVE-2021-23991 Mozilla: An attacker may use Thunderbird's OpenPGP key refresh mechanism to poison an existing key
1948394 - CVE-2021-23992 Mozilla: A crafted OpenPGP key with an invalid user ID could be used to confuse the user
1948395 - CVE-2021-23993 Mozilla: Inability to send encrypted OpenPGP email after importing a crafted OpenPGP key
