CVE-2016-9563 SAP NetWeaver: web page flaw
In plain words: A web app can be made to act on someone's behalf or reach places it should not. Stolen sessions, actions taken as the victim, or access to internal systems.
Confirmed exploited by CISA on · US federal patch deadline May 3, 2022
What to do
- Install SAP's security update for NetWeaver. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Keep a list of every internet-facing server you run so nothing is forgotten.
- Patch anything in this catalog first, ahead of normal patch cycles.
- Put admin and file-transfer apps behind a VPN or single sign-on instead of the open internet.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: Mass data theft and ransomware: a single flaw in a file-transfer or email server has exposed thousands of organisations at once.
The details
- Official name
- SAP NetWeaver XML External Entity (XXE) Vulnerability
- Product
- SAP NetWeaver
- CISA description
- SAP NetWeaver Application Server Java Platforms contains an unspecified vulnerability in BC-BMT-BPM-DSK which allows remote, authenticated users to conduct XML External Entity (XXE) attacks.
- Type of flaw
- Web page flaw (CWE-611)
- Confirmed exploited
- Nov 3, 2021
- US federal patch deadline
- May 3, 2022
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Answering about CVE-2016-9563 ·
Questions about CVE-2016-9563
Is CVE-2016-9563 being exploited?
Yes. CISA added CVE-2016-9563 to its Known Exploited Vulnerabilities catalog on Nov 3, 2021, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2016-9563?
Install SAP's security update for NetWeaver. If no update exists, follow the vendor's workaround or stop using the product until one ships. Keep a list of every internet-facing server you run so nothing is forgotten.
Am I affected by CVE-2016-9563?
Only if you use SAP NetWeaver. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.