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Red Hat: RHSA-2021-4965-01 Urgent: Firefox Memory Overflow

red hat
Calendar Grey December 6, 2021
Dist Redhat Esm H88
Debian releases urgent bulletin regarding Firefox update to resolve buffer overflow vulnerabilities affecting web security.
An update for thunderbird is now available for Red Hat Enterprise Linux 8.2 Extended Update Support

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.

Summary

Mozilla Thunderbird is a standalone mail and newsgroup client.
Security Fix(es):
* nss: Memory corruption in decodeECorDsaSignature with DSA signatures (and RSA-PSS) (CVE-2021-43527)
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.

Topics%20covered

Topics Covered

security advisory red hat software update memory corruption security fix critical severity thunderbird update

References

https://access.redhat.com/security/cve/CVE-2021-43527 https://access.redhat.com/security/updates/classification/#critical https://access.redhat.com/security/vulnerabilities/RHSB-2021-008

Package List

Red Hat Enterprise Linux AppStream EUS (v. 8.2):
Source: thunderbird-91.3.0-3.el8_2.src.rpm
aarch64: thunderbird-91.3.0-3.el8_2.aarch64.rpm thunderbird-debuginfo-91.3.0-3.el8_2.aarch64.rpm thunderbird-debugsource-91.3.0-3.el8_2.aarch64.rpm
ppc64le: thunderbird-91.3.0-3.el8_2.ppc64le.rpm thunderbird-debuginfo-91.3.0-3.el8_2.ppc64le.rpm thunderbird-debugsource-91.3.0-3.el8_2.ppc64le.rpm
x86_64: thunderbird-91.3.0-3.el8_2.x86_64.rpm thunderbird-debuginfo-91.3.0-3.el8_2.x86_64.rpm thunderbird-debugsource-91.3.0-3.el8_2.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/


Severity
critical
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:4954-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4954
Issue date: 2021-12-06

Topic

An update for thunderbird is now available for Red Hat Enterprise Linux 8.2Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Critical. 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.

Topics%20covered

Topics Covered

security advisory red hat software update memory corruption security fix critical severity thunderbird update

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream EUS (v. 8.2) - aarch64, ppc64le, x86_64

Bugs Fixed

2024370 - CVE-2021-43527 nss: Memory corruption in decodeECorDsaSignature with DSA signatures (and RSA-PSS)

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