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Red Hat Enterprise Linux 8.2: RHSA-2022-1070-01 Critical Expat Code Threat

red hat
Calendar Grey March 28, 2022
Dist Redhat Esm H88
Crucial safety enhancement for expatriates categorized as critical, influencing various Red Hat Enterprise Linux systems. More information available here.
An update for expat 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

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: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution (CVE-2022-25235)
* expat: Namespace-separator characters in "xmlns[:prefix]" attribute values can lead to arbitrary code execution (CVE-2022-25236)
* expat: Integer overflow in storeRawNames() (CVE-2022-25315)
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 code execution arbitrary code security impact red hat enterprise important update expat library

References

https://access.redhat.com/security/cve/CVE-2022-25235 https://access.redhat.com/security/cve/CVE-2022-25236 https://access.redhat.com/security/cve/CVE-2022-25315 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux BaseOS EUS (v. 8.2):
Source: expat-2.2.5-3.el8_2.2.src.rpm
aarch64: expat-2.2.5-3.el8_2.2.aarch64.rpm expat-debuginfo-2.2.5-3.el8_2.2.aarch64.rpm expat-debugsource-2.2.5-3.el8_2.2.aarch64.rpm expat-devel-2.2.5-3.el8_2.2.aarch64.rpm
ppc64le: expat-2.2.5-3.el8_2.2.ppc64le.rpm expat-debuginfo-2.2.5-3.el8_2.2.ppc64le.rpm expat-debugsource-2.2.5-3.el8_2.2.ppc64le.rpm expat-devel-2.2.5-3.el8_2.2.ppc64le.rpm
s390x: expat-2.2.5-3.el8_2.2.s390x.rpm expat-debuginfo-2.2.5-3.el8_2.2.s390x.rpm expat-debugsource-2.2.5-3.el8_2.2.s390x.rpm expat-devel-2.2.5-3.el8_2.2.s390x.rpm
x86_64: expat-2.2.5-3.el8_2.2.i686.rpm expat-2.2.5-3.el8_2.2.x86_64.rpm expat-debuginfo-2.2.5-3.el8_2.2.i686.rpm expat-debuginfo-2.2.5-3.el8_2.2.x86_64.rpm expat-debugsource-2.2.5-3.el8_2.2.i686.rpm expat-debugsource-2.2.5-3.el8_2.2.x86_64.rpm expat-devel-2.2.5-3.el8_2.2.i686.rpm expat-devel-2.2.5-3.el8_2.2.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
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:1070-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:1070
Issue date: 2022-03-28

Topic

An update for expat 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 Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory code execution arbitrary code security impact red hat enterprise important update expat library

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS EUS (v. 8.2) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

2056363 - CVE-2022-25315 expat: Integer overflow in storeRawNames()

2056366 - CVE-2022-25235 expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution

2056370 - CVE-2022-25236 expat: Namespace-separator characters in "xmlns[:prefix]" attribute values can lead to arbitrary code execution

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