CVE-2018-20592: Use After Free
First published: Sun Dec 30 2018(Updated: )
In Mini-XML (aka mxml) v2.12, there is a use-after-free in the mxmlAdd function of the mxml-node.c file. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted xml file, as demonstrated by mxmldoc.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| mini-xml | =2.12 | |
| Red Hat Fedora | =28 | |
| Red Hat Fedora | =29 |
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Reference Links
- https://github.com/michaelrsweet/mxml/issues/237
- https://github.com/ntu-sec/pocs/blob/master/mxml-53c75b0/crashes/uaf_mxml-node.c:128_1.txt.err
- https://github.com/ntu-sec/pocs/blob/master/mxml-53c75b0/crashes/uaf_mxml-node.c:128_2.txt.err
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N53IJHDYR5HVQLKH4J6B27OEQLGKSGY5/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RNWF6BAU7S42O4LE4B74KIMHFE2HDNMI/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N53IJHDYR5HVQLKH4J6B27OEQLGKSGY5/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RNWF6BAU7S42O4LE4B74KIMHFE2HDNMI/
Frequently Asked Questions
What is the severity of CVE-2018-20592?
CVE-2018-20592 is classified as a high severity vulnerability due to its potential to cause denial-of-service attacks.
How do I fix CVE-2018-20592?
To fix CVE-2018-20592, you should update Mini-XML to version 2.12 or later where the vulnerability has been addressed.
What types of systems are affected by CVE-2018-20592?
CVE-2018-20592 affects systems running Mini-XML version 2.12 as well as specific versions of Fedora, namely 28 and 29.
What attack methods are possible with CVE-2018-20592?
Attackers can exploit CVE-2018-20592 by sending crafted XML files that trigger the use-after-free condition.
What is Mini-XML and its relation to CVE-2018-20592?
Mini-XML is a small XML parsing library, and CVE-2018-20592 represents a critical vulnerability within its mxmlAdd function.
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