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Moderate Advisory: RHSA-2021-1702-01 for Brotli Buffer Overflow in RHEL 8

red hat
Calendar Grey May 18, 2021
Scroller Redhat
Important security patch for Red Hat's Brotli in Enterprise Linux 8 tackles a buffer overflow vulnerability and reduces potential threats.
An update for brotli is now available for Red Hat Enterprise Linux 8

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

Summary

Brotli is a generic-purpose lossless compression algorithm that compresses data using a combination of a modern variant of the LZ77 algorithm, Huffman coding and 2nd order context modeling, with a compression ratio comparable to the best currently available general-purpose compression methods. It is similar in speed with deflate but offers more dense compression.
Security Fix(es):
* brotli: buffer overflow when input chunk is larger than 2GiB (CVE-2020-8927)
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.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory moderate buffer overflow red hat software update brotli

References

https://access.redhat.com/security/cve/CVE-2020-8927 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/

Package List

Red Hat Enterprise Linux AppStream (v. 8):
aarch64: brotli-debuginfo-1.0.6-3.el8.aarch64.rpm brotli-debugsource-1.0.6-3.el8.aarch64.rpm brotli-devel-1.0.6-3.el8.aarch64.rpm python3-brotli-1.0.6-3.el8.aarch64.rpm python3-brotli-debuginfo-1.0.6-3.el8.aarch64.rpm
ppc64le: brotli-debuginfo-1.0.6-3.el8.ppc64le.rpm brotli-debugsource-1.0.6-3.el8.ppc64le.rpm brotli-devel-1.0.6-3.el8.ppc64le.rpm python3-brotli-1.0.6-3.el8.ppc64le.rpm python3-brotli-debuginfo-1.0.6-3.el8.ppc64le.rpm
s390x: brotli-debuginfo-1.0.6-3.el8.s390x.rpm brotli-debugsource-1.0.6-3.el8.s390x.rpm brotli-devel-1.0.6-3.el8.s390x.rpm python3-brotli-1.0.6-3.el8.s390x.rpm python3-brotli-debuginfo-1.0.6-3.el8.s390x.rpm
x86_64: brotli-debuginfo-1.0.6-3.el8.i686.rpm brotli-debuginfo-1.0.6-3.el8.x86_64.rpm brotli-debugsource-1.0.6-3.el8.i686.rpm brotli-debugsource-1.0.6-3.el8.x86_64.rpm brotli-devel-1.0.6-3.el8.i686.rpm brotli-devel-1.0.6-3.el8.x86_64.rpm python3-brotli-1.0.6-3.el8.x86_64.rpm python3-brotli-debuginfo-1.0.6-3.el8.i686.rpm python3-brotli-debuginfo-1.0.6-3.el8.x86_64.rpm
Red Hat Enterprise Linux BaseOS (v. 8):
Source: brotli-1.0.6-3.el8.src.rpm
aarch64: brotli-1.0.6-3.el8.aarch64.rpm brotli-debuginfo-1.0.6-3.el8.aarch64.rpm brotli-debugsource-1.0.6-3.el8.aarch64.rpm

Read the Full Advisory


Advisory ID: RHSA-2021:1702-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:1702
Issue date: 2021-05-18

Topic

An update for brotli is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. 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 moderate buffer overflow red hat software update brotli

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

1879225 - CVE-2020-8927 brotli: buffer overflow when input chunk is larger than 2GiB

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