critical
9.8
CWE
838 116 20
Advisory Published
Updated

CVE-2022-25235: Input Validation

First published: Wed Feb 16 2022(Updated: )

A flaw was found in expat. Passing malformed 2- and 3-byte UTF-8 sequences (for example, from start tag names) to the XML processing application on top of expat can lead to arbitrary code execution. This issue is dependent on how invalid UTF-8 is handled inside the XML processor.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
redhat/expat<0:2.0.1-14.el6_10
0:2.0.1-14.el6_10
redhat/firefox<0:91.7.0-3.el7_9
0:91.7.0-3.el7_9
redhat/thunderbird<0:91.7.0-2.el7_9
0:91.7.0-2.el7_9
redhat/expat<0:2.1.0-14.el7_9
0:2.1.0-14.el7_9
redhat/firefox<0:91.7.0-3.el8_5
0:91.7.0-3.el8_5
redhat/thunderbird<0:91.7.0-2.el8_5
0:91.7.0-2.el8_5
redhat/mingw-expat<0:2.4.8-1.el8
0:2.4.8-1.el8
redhat/expat<0:2.2.5-4.el8_5.3
0:2.2.5-4.el8_5.3
redhat/xmlrpc-c<0:1.51.0-5.el8_5.1
0:1.51.0-5.el8_5.1
redhat/firefox<0:91.7.0-3.el8_1
0:91.7.0-3.el8_1
redhat/thunderbird<0:91.7.0-2.el8_1
0:91.7.0-2.el8_1
redhat/expat<0:2.2.5-3.el8_1.1
0:2.2.5-3.el8_1.1
redhat/xmlrpc-c<0:1.51.0-5.el8_1.1
0:1.51.0-5.el8_1.1
redhat/firefox<0:91.7.0-3.el8_2
0:91.7.0-3.el8_2
redhat/thunderbird<0:91.7.0-2.el8_2
0:91.7.0-2.el8_2
redhat/expat<0:2.2.5-3.el8_2.2
0:2.2.5-3.el8_2.2
redhat/xmlrpc-c<0:1.51.0-5.el8_2.1
0:1.51.0-5.el8_2.1
redhat/firefox<0:91.7.0-3.el8_4
0:91.7.0-3.el8_4
redhat/thunderbird<0:91.7.0-2.el8_4
0:91.7.0-2.el8_4
redhat/expat<0:2.2.5-4.el8_4.2
0:2.2.5-4.el8_4.2
redhat/xmlrpc-c<0:1.51.0-5.el8_4.1
0:1.51.0-5.el8_4.1
redhat/redhat-virtualization-host<0:4.3.22-20220330.1.el7_9
0:4.3.22-20220330.1.el7_9
redhat/expat<2.4.5
2.4.5
debian/expat
2.2.10-2+deb11u5
2.2.10-2+deb11u6
2.5.0-1+deb12u1
2.6.4-1
IBM Engineering Requirements Management DOORS Web Access<=9.7.2.8
IBM Rational DOORS Web Access<=9.7.2.8
IBM Rational DOORS<=9.6.1.x
Libexpat<2.4.5
Debian=10.0
Debian=11.0
Fedora=34
Fedora=35
Oracle HTTP Server=12.2.1.3.0
Oracle HTTP Server=12.2.1.4.0
Oracle Storage Cloud Software Appliance=8.8
Siemens SINEMA Remote Connect<3.1

Remedy

There is no known mitigation other than restricting applications using the expat library from processing untrusted XML content. Please update the affected packages as soon as possible.

Remedy

https://github.com/libexpat/libexpat/pull/562

Remedy

https://www.oracle.com/security-alerts/cpuapr2022.html

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2022-25235?

    The severity of CVE-2022-25235 is classified as critical due to its potential for arbitrary code execution.

  • How do I fix CVE-2022-25235?

    To fix CVE-2022-25235, upgrade expat to version 0:2.0.1-14.el6_10 or higher.

  • Which software is affected by CVE-2022-25235?

    CVE-2022-25235 affects expat, firefox, and thunderbird across various Red Hat distributions.

  • What impact does CVE-2022-25235 have on my system?

    CVE-2022-25235 can lead to arbitrary code execution, potentially compromising system security.

  • Is there a workaround for CVE-2022-25235?

    Updating to the recommended versions of the affected software is the suggested approach to mitigate CVE-2022-25235.

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