CVE-2022-40674: Use After Free
First published: Wed Sep 14 2022(Updated: )
A flaw in XML parsing could have led to a use-after-free causing a potentially exploitable crash.In official releases of Firefox this vulnerability is mitigated by wasm sandboxing; versions managed by Linux distributions may have other settings.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/expat | <0:2.0.1-15.el6_10 | 0:2.0.1-15.el6_10 |
| redhat/compat-expat1 | <0:1.95.8-9.el6_10 | 0:1.95.8-9.el6_10 |
| redhat/expat | <0:2.1.0-15.el7_9 | 0:2.1.0-15.el7_9 |
| redhat/firefox | <0:102.3.0-7.el7_9 | 0:102.3.0-7.el7_9 |
| redhat/thunderbird | <0:102.3.0-4.el7_9 | 0:102.3.0-4.el7_9 |
| redhat/thunderbird | <0:102.3.0-4.el8_6 | 0:102.3.0-4.el8_6 |
| redhat/firefox | <0:102.3.0-7.el8_6 | 0:102.3.0-7.el8_6 |
| redhat/mingw-expat | <0:2.4.8-2.el8 | 0:2.4.8-2.el8 |
| redhat/expat | <0:2.2.5-8.el8_6.3 | 0:2.2.5-8.el8_6.3 |
| redhat/firefox | <0:102.3.0-7.el8_1 | 0:102.3.0-7.el8_1 |
| redhat/thunderbird | <0:102.3.0-4.el8_1 | 0:102.3.0-4.el8_1 |
| redhat/expat | <0:2.2.5-3.el8_1.2 | 0:2.2.5-3.el8_1.2 |
| redhat/thunderbird | <0:102.3.0-4.el8_2 | 0:102.3.0-4.el8_2 |
| redhat/firefox | <0:102.3.0-7.el8_2 | 0:102.3.0-7.el8_2 |
| redhat/expat | <0:2.2.5-3.el8_2.3 | 0:2.2.5-3.el8_2.3 |
| redhat/thunderbird | <0:102.3.0-4.el8_4 | 0:102.3.0-4.el8_4 |
| redhat/firefox | <0:102.3.0-7.el8_4 | 0:102.3.0-7.el8_4 |
| redhat/expat | <0:2.2.5-4.el8_4.4 | 0:2.2.5-4.el8_4.4 |
| redhat/expat | <0:2.2.10-12.el9_0.3 | 0:2.2.10-12.el9_0.3 |
| redhat/firefox | <0:102.3.0-7.el9_0 | 0:102.3.0-7.el9_0 |
| redhat/thunderbird | <0:102.3.0-4.el9_0 | 0:102.3.0-4.el9_0 |
| Libexpat Project Libexpat | <2.4.9 | |
| Debian Debian Linux | =10.0 | |
| Debian Debian Linux | =11.0 | |
| Fedoraproject Fedora | =35 | |
| Fedoraproject Fedora | =36 | |
| Fedoraproject Fedora | =37 | |
| debian/expat | <=2.2.10-2<=2.2.10-2+deb11u3<=2.4.8-1 | 2.4.8-2 2.2.10-2+deb11u4 |
| redhat/expat | <2.4.9 | 2.4.9 |
| Mozilla Firefox | <107 | 107 |
| <107 | 107 | |
| IBM BM Security Guardium | <=11.3 | |
| IBM Security Guardium | <=11.4 | |
| IBM Security Guardium | <=11.5 | |
| debian/expat | <=2.2.6-2+deb10u4 | 2.2.6-2+deb10u6 2.2.10-2+deb11u5 2.5.0-1 2.5.0-2 |
Remedy
There is no known mitigation other than restricting applications using the expat library from processing XML content. Please update the affected packages as soon as possible.
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Reference Links
- https://github.com/libexpat/libexpat/pull/629
- https://github.com/libexpat/libexpat/pull/640
- https://github.com/libexpat/libexpat/commit/4a32da87e931ba54393d465bb77c40b5c33d343b
- https://security-tracker.debian.org/tracker/CVE-2022-40674
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-40674
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1019761
- https://www.cve.org/CVERecord?id=CVE-2022-40674 https://nvd.nist.gov/vuln/detail/CVE-2022-40674 https://blog.hartwork.org/posts/expat-2-4-9-released/ https://github.com/advisories/GHSA-2vq2-xc55-3j5m
- https://bugzilla.redhat.com/show_bug.cgi?id=2130769
- https://access.redhat.com/errata/RHSA-2022:6921
- https://access.redhat.com/errata/RHSA-2022:6967
- https://access.redhat.com/errata/RHSA-2022:6834
- https://access.redhat.com/errata/RHSA-2022:6997
- https://access.redhat.com/errata/RHSA-2022:6998
- https://access.redhat.com/errata/RHSA-2022:7023
- https://access.redhat.com/errata/RHSA-2022:7024
- https://access.redhat.com/errata/RHSA-2023:3068
- https://access.redhat.com/errata/RHSA-2022:6878
- https://access.redhat.com/errata/RHSA-2022:7019
- https://access.redhat.com/errata/RHSA-2022:7021
- https://access.redhat.com/errata/RHSA-2022:6833
- https://access.redhat.com/errata/RHSA-2022:6996
- https://access.redhat.com/errata/RHSA-2022:7022
- https://access.redhat.com/errata/RHSA-2022:6832
- https://access.redhat.com/errata/RHSA-2022:6995
- https://access.redhat.com/errata/RHSA-2022:7025
- https://access.redhat.com/errata/RHSA-2022:6831
- https://access.redhat.com/errata/RHSA-2022:6838
- https://access.redhat.com/errata/RHSA-2022:7020
- https://access.redhat.com/errata/RHSA-2022:7026
- https://access.redhat.com/errata/RHSA-2022:8841
- https://access.redhat.com/errata/RHSA-2022:8598
- https://access.redhat.com/security/cve/cve-2022-40674
- https://lists.debian.org/debian-lts-announce/2022/09/msg00029.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GSVZN3IJ6OCPSJL7AEX3ZHSHAHFOGESK/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/J2IGJNHFV53PYST7VQV3T4NHVYAMXA36/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LQB6FJAM5YQ35SF5B2MN25Y2FX56EOEZ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WE2ZKEPGFCZ7R6DRVH3K6RBJPT42ZBEG/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XCGBVQQ47URGJAZWHCISHDWF6QBTV2LE/
- https://security.gentoo.org/glsa/202209-24
- https://security.gentoo.org/glsa/202211-06
- https://security.netapp.com/advisory/ntap-20221028-0008/
- https://www.debian.org/security/2022/dsa-5236
- https://bugzilla.mozilla.org/show_bug.cgi?id=1791598
- https://www.mozilla.org/en-US/security/advisories/mfsa2022-47/
- https://github.com/advisories/GHSA-2vq2-xc55-3j5m
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2130777
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2130780
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2130778
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2130781
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2130779
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2130782
- https://exchange.xforce.ibmcloud.com/vulnerabilities/236116
- https://www.ibm.com/support/pages/node/6999317 (Advisory)
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WE2ZKEPGFCZ7R6DRVH3K6RBJPT42ZBEG/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J2IGJNHFV53PYST7VQV3T4NHVYAMXA36/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GSVZN3IJ6OCPSJL7AEX3ZHSHAHFOGESK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCGBVQQ47URGJAZWHCISHDWF6QBTV2LE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LQB6FJAM5YQ35SF5B2MN25Y2FX56EOEZ/
Parent vulnerabilities
(Appears in the following advisories)
- RHSA-2022:6921
- RHSA-2022:6967
- RHSA-2022:6834
- RHSA-2022:6997
- RHSA-2022:6998
- RHSA-2022:7023
- RHSA-2022:7024
- RHSA-2023:3068
- RHSA-2022:6878
- RHSA-2022:7019
- RHSA-2022:7021
- RHSA-2022:6833
- RHSA-2022:6996
- RHSA-2022:7022
- RHSA-2022:6832
- RHSA-2022:6995
- RHSA-2022:7025
- RHSA-2022:6831
- RHSA-2022:6838
- RHSA-2022:7020
- RHSA-2022:7026
- RHSA-2022:8841
- RHSA-2022:8598
- MFSA2022-47
- IBM-6999317
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is CVE-2022-40674?
CVE-2022-40674 is a vulnerability in libexpat before 2.4.9 that allows for a use-after-free vulnerability in the doContent function in xmlparse.c.
What is the severity of CVE-2022-40674?
CVE-2022-40674 has a severity rating of 8.1 (high).
How does CVE-2022-40674 impact the affected software?
CVE-2022-40674 affects the expat package versions 2.4.8-2 and 2.2.10-2+deb11u4 in Debian, as well as other Red Hat packages such as thunderbird and firefox.
Is there a fix available for CVE-2022-40674?
Yes, there are fixes available for CVE-2022-40674. For Debian, updating to version 2.4.9 or higher of the expat package is recommended. Red Hat provides specific version updates for the affected packages.
Where can I find more information about CVE-2022-40674?
You can find more information about CVE-2022-40674 in the bugzilla.mozilla.org and mozilla.org security advisories, as well as in the GitHub pull request related to the vulnerability.
- collector/security-tracker-debian
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