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Red Hat Product Errata RHSA-2021:4133 - Security Advisory
Issued:
2021-11-04
Updated:
2021-11-04

RHSA-2021:4133 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: thunderbird security update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for thunderbird is now available for Red Hat Enterprise Linux 8.1 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. 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 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.

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 for x86_64 - Extended Update Support 8.1 x86_64
  • Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.1 ppc64le
  • Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.1 ppc64le
  • Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.1 x86_64

Fixes

  • BZ - 2019621 - CVE-2021-38503 Mozilla: iframe sandbox rules did not apply to XSLT stylesheets
  • BZ - 2019622 - CVE-2021-38504 Mozilla: Use-after-free in file picker dialog
  • BZ - 2019624 - CVE-2021-38506 Mozilla: Firefox could be coaxed into going into fullscreen mode without notification or warning
  • BZ - 2019625 - CVE-2021-38507 Mozilla: Opportunistic Encryption in HTTP2 could be used to bypass the Same-Origin-Policy on services hosted on other ports
  • BZ - 2019626 - Mozilla: Use-after-free in HTTP2 Session object
  • BZ - 2019627 - CVE-2021-38508 Mozilla: Permission Prompt could be overlaid, resulting in user confusion and potential spoofing
  • BZ - 2019628 - CVE-2021-38509 Mozilla: Javascript alert box could have been spoofed onto an arbitrary domain
  • BZ - 2019630 - Mozilla: Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3

CVEs

  • CVE-2021-38503
  • CVE-2021-38504
  • CVE-2021-38506
  • CVE-2021-38507
  • CVE-2021-38508
  • CVE-2021-38509
  • CVE-2021-43529
  • CVE-2021-43534
  • CVE-2021-43535

References

  • https://access.redhat.com/security/updates/classification/#important
Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.1

SRPM
thunderbird-91.3.0-2.el8_1.src.rpm SHA-256: 9a06eb7ecb698d1de7380bf1aafb0509901f2531c9c55c004d332d749c7b7829
x86_64
thunderbird-91.3.0-2.el8_1.x86_64.rpm SHA-256: 2f778c5ce2f19ed8ec109d9791f7c3d56d1b6501be167cc3ad21000ef59ef49b
thunderbird-debuginfo-91.3.0-2.el8_1.x86_64.rpm SHA-256: 1b5a38c659e6b7d0e0064bba57bcf7e7522e38ae3c7c81a3125b02c41c0752c7
thunderbird-debugsource-91.3.0-2.el8_1.x86_64.rpm SHA-256: 9ee8600c17a18f0f2686869761a183cea26976cff7fef9db0f26c24228ce26b6

Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.1

SRPM
thunderbird-91.3.0-2.el8_1.src.rpm SHA-256: 9a06eb7ecb698d1de7380bf1aafb0509901f2531c9c55c004d332d749c7b7829
ppc64le
thunderbird-91.3.0-2.el8_1.ppc64le.rpm SHA-256: 97ec30647b5bfc2732d3e068be035f5bd11f6b9bc4adf30aa70af7cf9774ef1a
thunderbird-debuginfo-91.3.0-2.el8_1.ppc64le.rpm SHA-256: 84b8fd2e5abc7623fa02f2b792fe6638f30be5a40d4ef3f7a408912df9ecb6ec
thunderbird-debugsource-91.3.0-2.el8_1.ppc64le.rpm SHA-256: d66e29bcc43f649021dd2c5e23588de7cb61df534a28026697d175b2e51e61f2

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.1

SRPM
thunderbird-91.3.0-2.el8_1.src.rpm SHA-256: 9a06eb7ecb698d1de7380bf1aafb0509901f2531c9c55c004d332d749c7b7829
ppc64le
thunderbird-91.3.0-2.el8_1.ppc64le.rpm SHA-256: 97ec30647b5bfc2732d3e068be035f5bd11f6b9bc4adf30aa70af7cf9774ef1a
thunderbird-debuginfo-91.3.0-2.el8_1.ppc64le.rpm SHA-256: 84b8fd2e5abc7623fa02f2b792fe6638f30be5a40d4ef3f7a408912df9ecb6ec
thunderbird-debugsource-91.3.0-2.el8_1.ppc64le.rpm SHA-256: d66e29bcc43f649021dd2c5e23588de7cb61df534a28026697d175b2e51e61f2

Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.1

SRPM
thunderbird-91.3.0-2.el8_1.src.rpm SHA-256: 9a06eb7ecb698d1de7380bf1aafb0509901f2531c9c55c004d332d749c7b7829
x86_64
thunderbird-91.3.0-2.el8_1.x86_64.rpm SHA-256: 2f778c5ce2f19ed8ec109d9791f7c3d56d1b6501be167cc3ad21000ef59ef49b
thunderbird-debuginfo-91.3.0-2.el8_1.x86_64.rpm SHA-256: 1b5a38c659e6b7d0e0064bba57bcf7e7522e38ae3c7c81a3125b02c41c0752c7
thunderbird-debugsource-91.3.0-2.el8_1.x86_64.rpm SHA-256: 9ee8600c17a18f0f2686869761a183cea26976cff7fef9db0f26c24228ce26b6

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

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