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Red Hat Enterprise Linux 8 Security Update: RHSA-2020-4484-01 Expat

red hat
Calendar Grey November 4, 2020
Dist Redhat Esm H88
Canonical issues a notable security patch for libjpeg, resolving vulnerabilities that may result in DoS scenarios and buffer overflow exploits.
An update for expat 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

After installing the updated packages, applications using the Expat library must be restarted for the update to take effect.

Summary

Expat is a C library for parsing XML documents.
Security Fix(es):
* expat: large number of colons in input makes parser consume high amount of resources, leading to DoS (CVE-2018-20843)
* expat: heap-based buffer over-read via crafted XML input (CVE-2019-15903)
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 8.3 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory DoS Red Hat Enterprise Linux moderate severity buffer over-read expat

References

https://access.redhat.com/security/cve/CVE-2018-20843 https://access.redhat.com/security/cve/CVE-2019-15903 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.3_release_notes/

Package List

Red Hat Enterprise Linux BaseOS (v. 8):
Source: expat-2.2.5-4.el8.src.rpm
aarch64: expat-2.2.5-4.el8.aarch64.rpm expat-debuginfo-2.2.5-4.el8.aarch64.rpm expat-debugsource-2.2.5-4.el8.aarch64.rpm expat-devel-2.2.5-4.el8.aarch64.rpm
ppc64le: expat-2.2.5-4.el8.ppc64le.rpm expat-debuginfo-2.2.5-4.el8.ppc64le.rpm expat-debugsource-2.2.5-4.el8.ppc64le.rpm expat-devel-2.2.5-4.el8.ppc64le.rpm
s390x: expat-2.2.5-4.el8.s390x.rpm expat-debuginfo-2.2.5-4.el8.s390x.rpm expat-debugsource-2.2.5-4.el8.s390x.rpm expat-devel-2.2.5-4.el8.s390x.rpm
x86_64: expat-2.2.5-4.el8.i686.rpm expat-2.2.5-4.el8.x86_64.rpm expat-debuginfo-2.2.5-4.el8.i686.rpm expat-debuginfo-2.2.5-4.el8.x86_64.rpm expat-debugsource-2.2.5-4.el8.i686.rpm expat-debugsource-2.2.5-4.el8.x86_64.rpm expat-devel-2.2.5-4.el8.i686.rpm expat-devel-2.2.5-4.el8.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/


Advisory ID: RHSA-2020:4484-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4484
Issue date: 2020-11-03

Topic

An update for expat 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 DoS Red Hat Enterprise Linux moderate severity buffer over-read expat

Relevant Releases Architectures

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

Bugs Fixed

1723723 - CVE-2018-20843 expat: large number of colons in input makes parser consume high amount of resources, leading to DoS

1752592 - CVE-2019-15903 expat: heap-based buffer over-read via crafted XML input

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