Lucene search

K
osvGoogleOSV:ALSA-2021:4130
HistoryNov 04, 2021 - 4:03 p.m.

Important: thunderbird security update

2021-11-0416:03:41
Google
osv.dev
11
mozilla thunderbird
security update
version 91.3.0
use-after-free
memory safety bugs
cve-2021-38503
cve-2021-38504
cve-2021-38506
cve-2021-38507
cve-2021-38508
cve-2021-38509
opportunistic encryption
permission prompt

AI Score

10

Confidence

High

EPSS

0.01

Percentile

83.8%

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 91.3.0.

Security Fix(es):

  • Mozilla: Use-after-free in HTTP2 Session object

  • Mozilla: Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3

  • Mozilla: iframe sandbox rules did not apply to XSLT stylesheets (CVE-2021-38503)

  • Mozilla: Use-after-free in file picker dialog (CVE-2021-38504)

  • Mozilla: Firefox could be coaxed into going into fullscreen mode without notification or warning (CVE-2021-38506)

  • Mozilla: Opportunistic Encryption in HTTP2 could be used to bypass the Same-Origin-Policy on services hosted on other ports (CVE-2021-38507)

  • Mozilla: Permission Prompt could be overlaid, resulting in user confusion and potential spoofing (CVE-2021-38508)

  • Mozilla: Javascript alert box could have been spoofed onto an arbitrary domain (CVE-2021-38509)

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.