CVE-2016-6798: XEE
First published: Wed Jul 19 2017(Updated: )
In the XSS Protection API module before 1.0.12 in Apache Sling, the method XSS.getValidXML() uses an insecure SAX parser to validate the input string, which allows for XXE attacks in all scripts which use this method to validate user input, potentially allowing an attacker to read sensitive data on the filesystem, perform same-site-request-forgery (SSRF), port-scanning behind the firewall or DoS the application.
Credit: security@apache.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| maven/org.apache.sling:org.apache.sling.xss.compat | <1.1.0 | 1.1.0 |
| maven/org.apache.sling:org.apache.sling.xss | <1.0.12 | 1.0.12 |
| Apache Sling API | <=1.0.10 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2016-6798
- https://lists.apache.org/thread.html/b72c3a511592ec70729b3ec2d29302b6ce87bbeab62d4745617a6bd0@%3Cdev.sling.apache.org%3E
- http://www.securityfocus.com/bid/99873
- https://github.com/apache/sling-org-apache-sling-xss/commit/de32b144ad2be3367559f6184d560db42a220529
- https://github.com/jensdietrich/xshady-release/tree/main/CVE-2016-6798
- https://github.com/advisories/GHSA-7g54-vgp6-jj5w (Advisory)
- https://lists.apache.org/thread.html/b72c3a511592ec70729b3ec2d29302b6ce87bbeab62d4745617a6bd0%40%3Cdev.sling.apache.org%3E
Frequently Asked Questions
What is the severity of CVE-2016-6798?
CVE-2016-6798 has a medium severity rating due to its potential to enable XXE attacks.
How do I fix CVE-2016-6798?
To fix CVE-2016-6798, upgrade to Apache Sling XSS API version 1.0.12 or later, or the XSS Protection API module version 1.1.0 or later.
What systems are affected by CVE-2016-6798?
CVE-2016-6798 affects Apache Sling versions up to 1.0.10 and the XSS Protection API module before 1.0.12.
What type of attack is enabled by CVE-2016-6798?
CVE-2016-6798 allows for XML External Entity (XXE) attacks, which can lead to exposure of sensitive data.
Is user input validation compromised in CVE-2016-6798?
Yes, CVE-2016-6798 compromises user input validation due to the use of an insecure SAX parser.
- collector/github-advisory-latest
- alias/GHSA-7g54-vgp6-jj5w
- alias/CVE-2016-6798
- collector/github-advisory
- agent/author
- agent/type
- agent/softwarecombine
- agent/severity
- agent/weakness
- agent/references
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/first-publish-date
- agent/event
- agent/trending
- agent/source
- agent/tags
- collector/nvd-cve
- agent/software-canonical-lookup-request
- collector/nvd-index
- package-manager/maven
- vendor/apache
- canonical/apache sling api
- version/apache sling api/1.0.10