Bug 1662711 (CVE-2018-20592) - CVE-2018-20592 mxml: Use-after-free in the mxmlAdd function of the mxml-node.c
Summary: CVE-2018-20592 mxml: Use-after-free in the mxmlAdd function of the mxml-node.c
Status: CLOSED UPSTREAM
Alias: CVE-2018-20592
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=low,public=20181230,reported=2...
Keywords: Security
Depends On: 1662712 1662713
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-12-31 21:39 UTC by Pedro Sampaio
Modified: 2019-06-10 10:44 UTC (History)
4 users (show)

(edit)
Clone Of:
(edit)
Last Closed: 2019-06-10 10:44:34 UTC


Attachments (Terms of Use)

Description Pedro Sampaio 2018-12-31 21:39:12 UTC
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.

References:

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

Upstream issue:

https://github.com/michaelrsweet/mxml/issues/237

Comment 1 Pedro Sampaio 2018-12-31 21:39:29 UTC
Created mxml tracking bugs for this issue:

Affects: epel-7 [bug 1662713]
Affects: fedora-all [bug 1662712]

Comment 2 Product Security DevOps Team 2019-06-10 10:44:34 UTC
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.


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