Date: April 22, 2021
Affected Versions:
Nexus Repository Manager 3 versions up to and including 3.30.0
Fixed in Version:
Nexus Repository Manager 3 version 3.30.1 and later
Risk:
Medium - 5.3 - (CVSS3.1:AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
Summary:
An information disclosure vulnerability has been discovered in Nexus Repository Manager 3.
An unauthenticated user can submit a crafted HTTP request to get a list of files and directories that exist in Nexus Repository’s webroot. This is a set of static resources that form part of the Nexus Repository UI and does not expose customers' data. This advisory provides the pertinent information needed to properly address this vulnerability, along with the details on how to reach us if you have any further questions or concerns.We are highly recommending all instances of Nexus Repository Manager 3 be upgraded to 3.30.1 or later. The latest version can be downloaded from:
Nexus Repository Manager 3 Download
For detailed information on upgrading, please see:
Upgrading Nexus Repository Manager 3.1.0 and Newer
Support:
If you run into any problems or have any questions/concerns, please contact us by filing a ticket at https://support.sonatype.com.
Credit:
Sonatype thanks Bart Stakun, Jakub Botwicz, and Itunuoluwa Odetokun from Goldman Sachs’ Security Research team for finding and reporting this issue.
Frequently Asked Questions:
Q: What is the risk associated with this vulnerability?
A: An unauthenticated attacker could get a list of files and directories that exist in a web server's public folder.
Q: What preconditions must be met in order to be vulnerable?
A: An attacker must have network access to the Nexus Repository Manager instance in order to submit a malicious request.
Q: Are there implications associated with this advisory itself?
A: Disclosure unfortunately means bad actors may try to take advantage. While we have initially limited the information to the minimum details necessary for users to affect an appropriate fix, this merely slows down a would-be attacker. As such, we are advising all organizations utilizing Nexus Repository Manager to immediately assess their individual impact and take appropriate action in response.
Q: Where can I obtain more information associated with the vulnerability?
A: At this time, and in the interest of best protecting our user community, we are limiting the information released to that absolutely required in order to assess the impact and affect remediation. Please contact support for more information.
Q: Why is Sonatype making this information available?
A: This is part of a responsible disclosure process. We are taking a concerted and proactive approach in our outreach activities and an effort to achieve the most rapid remediation possible.