usd-2019-0001 | Adobe Experience Manager (AEM)/22.214.171.124
Advisory ID: usd-2019-0001
Affected Version: 126.96.36.199
Vulnerability Type: Code Injection
First Pubslished: 2019-07-31
Last Update: 2019-05-20
Security Risk: High
Vendor URL: https://www.adobe.com/
Vendor Status: Not fixed
Advisory Status: Open
The attacker can create a site with a malicious title, which contains an Excel formula. When the list of sites is exported by another user and opened in
Microsoft Excel, the formula is evaluated. In the PoC, this is used to launch the Windows calculator.
1) A site is created with the payload as title.
2) Then the path with the page is getting exported as CSV.
3) The title will be written into the CSV as it is, therefore making the injection possible.
Payload: „,;=2+5+cmd|‘ /C calc‘!A0;
This will result with the following row in the csv:
„‚“,;=2+5+cmd|‘ /C calc‘!A0;“,“/content/rsb/de/sureroute1″,“sureroute1″,[…] The ; will be interpreted as new column and therefore place the payload in an
own column. This will lead to the execution of calc.exe.
Escape special characters in CSV / prevent escape from „“
- 2019-01-16 Advisory sent to PSIRT@adobe.com
- 2019-02-14 Adobe PSIRT respond they won’t fix it.
This security vulnerabilities were found by Markus Schader of usd AG.
ABOUT usd SECURITY ADVISORIES
In order to protect businesses against hackers and criminals, we always have to keep our skills and knowledge up to date. Thus, security research is just as important for our work as is building up a security community to promote the exchange of knowledge. After all, more security can only be achieved if many individuals take on the task.
Our CST Academy and our usd HeroLab are essential parts of our security mission. We share the knowledge we gain in our practical work and our research through training courses and publications. In this context, the usd HeroLab publishes a series of papers
on new vulnerabilities and current security issues.
Always for the sake of our mission: „more security.“
In accordance with usd AG’s Responsible Disclosure Policy, all vendors have been notified of the existence of these vulnerabilities.
The information provided in this security advisory is provided „as is“ and without warranty of any kind. Details of this security advisory may be updated in order to provide as accurate information as possible.