XML External Entity (XXE) Injection Affecting expat package, versions <0:2.1.0-12.24.amzn1
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Test your applications- Snyk ID SNYK-AMZN201803-EXPAT-1724496
- published 27 Sep 2021
- disclosed 24 Jun 2019
Introduced: 24 Jun 2019
CVE-2018-20843 Open this link in a new tabHow to fix?
Upgrade Amazon-Linux:2018.03
expat
to version 0:2.1.0-12.24.amzn1 or higher.
This issue was patched in ALAS-2021-1459
.
NVD Description
Note: Versions mentioned in the description apply only to the upstream expat
package and not the expat
package as distributed by Amazon-Linux
.
See How to fix?
for Amazon-Linux:2018.03
relevant fixed versions and status.
In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).