Apache Sling up to 1.0.12 XSS Protection API XSSAPI.encodeForJSString Script Tag cross site scripting

Summaryinfo

A vulnerability categorized as problematic has been discovered in Apache Sling up to 1.0.12. Affected is the function XSSAPI.encodeForJSString of the component XSS Protection API. Executing a manipulation as part of Script Tag can lead to cross site scripting. This vulnerability is tracked as CVE-2016-5394. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as problematic was found in Apache Sling up to 1.0.12. This vulnerability affects the function XSSAPI.encodeForJSString of the component XSS Protection API. The manipulation as part of a Script Tag leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes:

In the XSS Protection API module before 1.0.12 in Apache Sling, the encoding done by the XSSAPI.encodeForJSString() method is not restrictive enough and for some input patterns allows script tags to pass through unencoded, leading to potential XSS vulnerabilities.

The bug was discovered 07/18/2017. The weakness was disclosed 07/19/2017 (Website). The advisory is available at securityfocus.com. This vulnerability was named CVE-2016-5394 since 06/10/2016. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/27/2019). This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 99870†). The entry VDB-103763 is pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Apache

Name

• Sling

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5
• 1.0.6
• 1.0.7
• 1.0.8
• 1.0.9
• 1.0.10
• 1.0.11
• 1.0.12

License

• open-source

Website

• Vendor: https://www.apache.org/

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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