PaperCut NG upload Link Following Information Disclosure Vulnerability
June 18th, 2024
Vulnerability Details
This vulnerability allows remote attackers to disclose sensitive information on affected installations of PaperCut NG. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.
The specific flaw exists within the upload endpoint. By uploading a symbolic link, an attacker can abuse the service to read arbitrary files. An attacker can leverage this vulnerability to disclose information in the context of root.
Additional Details
PaperCut has issued an update to correct this vulnerability. More details can be found at:
https://www.papercut.com/kb/Main/Security-Bulletin-March-2024
Disclosure Timeline
- 2024-01-17 - Vulnerability reported to vendor
- 2024-06-18 - Coordinated public release of advisory
- 2024-08-15 - Advisory Updated
Credit
Anonymous
