Synopsis

Important: thunderbird security update

Type/Severity

Security Advisory: Important

Topic

An update for thunderbird is now available for Red Hat Enterprise Linux 6.

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 68.7.0.

Security Fix(es):

• Mozilla: Use-after-free while running the nsDocShell destructor (CVE-2020-6819)
  
• Mozilla: Use-after-free when handling a ReadableStream (CVE-2020-6820)
  
• Mozilla: Uninitialized memory could be read when using the WebGL copyTexSubImage method (CVE-2020-6821)
  
• Mozilla: Memory safety bugs fixed in Firefox 75 and Firefox ESR 68.7 (CVE-2020-6825)
  
• Mozilla: Out of bounds write in GMPDecodeData when processing large images (CVE-2020-6822)
  

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 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64

Fixes

• BZ - 1820869 - CVE-2020-6819 Mozilla: Use-after-free while running the nsDocShell destructor
• BZ - 1820878 - CVE-2020-6820 Mozilla: Use-after-free when handling a ReadableStream
• BZ - 1821674 - CVE-2020-6821 Mozilla: Uninitialized memory could be read when using the WebGL copyTexSubImage method
• BZ - 1821676 - CVE-2020-6822 Mozilla: Out of bounds write in GMPDecodeData when processing large images
• BZ - 1821682 - CVE-2020-6825 Mozilla: Memory safety bugs fixed in Firefox 75 and Firefox ESR 68.7

CVEs

• CVE-2020-6819
• CVE-2020-6820
• CVE-2020-6821
• CVE-2020-6822
• CVE-2020-6825

References

• https://access.redhat.com/security/updates/classification/#important
• https://www.mozilla.org/en-US/security/advisories/mfsa2020-14/

Red Hat Enterprise Linux Server 6

SRPM
thunderbird-68.7.0-1.el6_10.src.rpm	SHA-256: c7d492ad8db67412e04314a498ea39d1d5a7a3c961cb85c53f8d6141dadd8d1d
x86_64
thunderbird-68.7.0-1.el6_10.x86_64.rpm	SHA-256: e6fbf57724c0e0af8229811ffbc410383c507e2be457b57ba03b219ec5c1f97c
thunderbird-debuginfo-68.7.0-1.el6_10.x86_64.rpm	SHA-256: e9cc1a21b47040107548ff21506850dd66bf485b601057b9bbb271028ed399e0
i386
thunderbird-68.7.0-1.el6_10.i686.rpm	SHA-256: c0265b5ee72268ef06c9ec4a16923567bc97593af0274cee3483307754c00db0
thunderbird-debuginfo-68.7.0-1.el6_10.i686.rpm	SHA-256: e9c23097cdde70518908425aed0b004e306f8bc44199392563b16921cec5710f

Red Hat Enterprise Linux Workstation 6

SRPM
thunderbird-68.7.0-1.el6_10.src.rpm	SHA-256: c7d492ad8db67412e04314a498ea39d1d5a7a3c961cb85c53f8d6141dadd8d1d
x86_64
thunderbird-68.7.0-1.el6_10.x86_64.rpm	SHA-256: e6fbf57724c0e0af8229811ffbc410383c507e2be457b57ba03b219ec5c1f97c
thunderbird-debuginfo-68.7.0-1.el6_10.x86_64.rpm	SHA-256: e9cc1a21b47040107548ff21506850dd66bf485b601057b9bbb271028ed399e0
i386
thunderbird-68.7.0-1.el6_10.i686.rpm	SHA-256: c0265b5ee72268ef06c9ec4a16923567bc97593af0274cee3483307754c00db0
thunderbird-debuginfo-68.7.0-1.el6_10.i686.rpm	SHA-256: e9c23097cdde70518908425aed0b004e306f8bc44199392563b16921cec5710f

Red Hat Enterprise Linux Desktop 6

SRPM
thunderbird-68.7.0-1.el6_10.src.rpm	SHA-256: c7d492ad8db67412e04314a498ea39d1d5a7a3c961cb85c53f8d6141dadd8d1d
x86_64
thunderbird-68.7.0-1.el6_10.x86_64.rpm	SHA-256: e6fbf57724c0e0af8229811ffbc410383c507e2be457b57ba03b219ec5c1f97c
thunderbird-debuginfo-68.7.0-1.el6_10.x86_64.rpm	SHA-256: e9cc1a21b47040107548ff21506850dd66bf485b601057b9bbb271028ed399e0
i386
thunderbird-68.7.0-1.el6_10.i686.rpm	SHA-256: c0265b5ee72268ef06c9ec4a16923567bc97593af0274cee3483307754c00db0
thunderbird-debuginfo-68.7.0-1.el6_10.i686.rpm	SHA-256: e9c23097cdde70518908425aed0b004e306f8bc44199392563b16921cec5710f

Red Hat Enterprise Linux for IBM z Systems 6

SRPM
thunderbird-68.7.0-1.el6_10.src.rpm	SHA-256: c7d492ad8db67412e04314a498ea39d1d5a7a3c961cb85c53f8d6141dadd8d1d
s390x
thunderbird-68.7.0-1.el6_10.s390x.rpm	SHA-256: 0aabecafaf6f808c02d3396a93bf35e7adef3f3bd5de41d13175fd40aebcdb4c
thunderbird-debuginfo-68.7.0-1.el6_10.s390x.rpm	SHA-256: b4cf8b9ef94b633940e1708612ec9381c790a18922094a1986862ddb590e6674

Red Hat Enterprise Linux for Power, big endian 6

SRPM
thunderbird-68.7.0-1.el6_10.src.rpm	SHA-256: c7d492ad8db67412e04314a498ea39d1d5a7a3c961cb85c53f8d6141dadd8d1d
ppc64
thunderbird-68.7.0-1.el6_10.ppc64.rpm	SHA-256: f85ae7ca611786d91ef50ac5c5d7645be9412cb406a4f1f1ac7533b1d5e3e03b
thunderbird-debuginfo-68.7.0-1.el6_10.ppc64.rpm	SHA-256: cca3d8cd0a808d18f141854275148d98c44c82e5839f2f76e3e914f3ea70e88e