CVE-2021-39224 is a vulnerability in Nextcloud Officeonline
Published on October 25, 2021
File path disclosure of shared files in OfficeOnline application
Nextcloud is an open-source, self-hosted productivity platform. The Nextcloud OfficeOnline application prior to version 1.1.1 returned verbatim exception messages to the user. This could result in a full path disclosure on shared files. (e.g. an attacker could see that the file `shared.txt` is located within `/files/$username/Myfolder/Mysubfolder/shared.txt`). It is recommended that the OfficeOnline application is upgraded to 1.1.1. As a workaround, one may disable the OfficeOnline application in the app settings.
Vulnerability Analysis
CVE-2021-39224 is exploitable with network access, requires user interaction and a small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Weakness Type
What is an Information Disclosure Vulnerability?
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
CVE-2021-39224 has been classified to as an Information Disclosure vulnerability or weakness.
Products Associated with CVE-2021-39224
Want to know whenever a new CVE is published for Nextcloud Officeonline? stack.watch will email you.
Affected Versions
nextcloud security-advisories Version < 1.1.1 is affected by CVE-2021-39224Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.