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Red Hat Product Errata RHSA-2021:0297 - Security Advisory
Issued:
2021-01-28
Updated:
2021-01-28

RHSA-2021:0297 - 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 7.

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 78.7.0.

Security Fix(es):

  • Mozilla: Cross-origin information leakage via redirected PDF requests (CVE-2021-23953)
  • Mozilla: Type confusion when using logical assignment operators in JavaScript switch statements (CVE-2021-23954)
  • Mozilla: Memory safety bugs fixed in Firefox 85 and Firefox ESR 78.7 (CVE-2021-23964)
  • Mozilla: IMAP Response Injection when using STARTTLS (CVE-2020-15685)
  • Mozilla: HTTPS pages could have been intercepted by a registered service worker when they should not have been (CVE-2020-26976)
  • Mozilla: Use-after-poison for incorrectly redeclared JavaScript variables during GC (CVE-2021-23960)

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 - 1920646 - CVE-2021-23953 Mozilla: Cross-origin information leakage via redirected PDF requests
  • BZ - 1920648 - CVE-2021-23954 Mozilla: Type confusion when using logical assignment operators in JavaScript switch statements
  • BZ - 1920649 - CVE-2020-26976 Mozilla: HTTPS pages could have been intercepted by a registered service worker when they should not have been
  • BZ - 1920650 - CVE-2021-23960 Mozilla: Use-after-poison for incorrectly redeclared JavaScript variables during GC
  • BZ - 1920651 - CVE-2021-23964 Mozilla: Memory safety bugs fixed in Firefox 85 and Firefox ESR 78.7
  • BZ - 1921543 - CVE-2020-15685 Mozilla: IMAP Response Injection when using STARTTLS

CVEs

  • CVE-2020-15685
  • CVE-2020-26976
  • CVE-2021-23953
  • CVE-2021-23954
  • CVE-2021-23960
  • CVE-2021-23964

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 Server 7

SRPM
thunderbird-78.7.0-1.el7_9.src.rpm SHA-256: b09ef4747e54011364936c21d13c4d97e946a5b7c16a5a986bbeb1b7a7b1a79d
x86_64
thunderbird-78.7.0-1.el7_9.x86_64.rpm SHA-256: 4e2150837942ddeaaa2aa5cf09f724c9cbae96c1e826f794a84ad6a46978ca42
thunderbird-debuginfo-78.7.0-1.el7_9.x86_64.rpm SHA-256: 135459df4eab58fec9fc59ee7133935f55f50aee70f273a468014814b1b28f5a

Red Hat Enterprise Linux Workstation 7

SRPM
thunderbird-78.7.0-1.el7_9.src.rpm SHA-256: b09ef4747e54011364936c21d13c4d97e946a5b7c16a5a986bbeb1b7a7b1a79d
x86_64
thunderbird-78.7.0-1.el7_9.x86_64.rpm SHA-256: 4e2150837942ddeaaa2aa5cf09f724c9cbae96c1e826f794a84ad6a46978ca42
thunderbird-debuginfo-78.7.0-1.el7_9.x86_64.rpm SHA-256: 135459df4eab58fec9fc59ee7133935f55f50aee70f273a468014814b1b28f5a

Red Hat Enterprise Linux Desktop 7

SRPM
thunderbird-78.7.0-1.el7_9.src.rpm SHA-256: b09ef4747e54011364936c21d13c4d97e946a5b7c16a5a986bbeb1b7a7b1a79d
x86_64
thunderbird-78.7.0-1.el7_9.x86_64.rpm SHA-256: 4e2150837942ddeaaa2aa5cf09f724c9cbae96c1e826f794a84ad6a46978ca42
thunderbird-debuginfo-78.7.0-1.el7_9.x86_64.rpm SHA-256: 135459df4eab58fec9fc59ee7133935f55f50aee70f273a468014814b1b28f5a

Red Hat Enterprise Linux for Power, little endian 7

SRPM
thunderbird-78.7.0-1.el7_9.src.rpm SHA-256: b09ef4747e54011364936c21d13c4d97e946a5b7c16a5a986bbeb1b7a7b1a79d
ppc64le
thunderbird-78.7.0-1.el7_9.ppc64le.rpm SHA-256: 32d360d6a8f0575ba5369e1c32cecd7f59e4141cfc874c9e5e9e034e64879e7e
thunderbird-debuginfo-78.7.0-1.el7_9.ppc64le.rpm SHA-256: 4408a952fe35d8baa208bfbe2368c6d357f8207cbc1d43bcb42b8ef2f8b459b8

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

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