Date: October 27, 2021
Nexus Repository 3 versions up to and including 3.35.0
Fixed in Version:
Nexus Repository 3 version 3.36.0 and later
Medium - 5 - (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N)
We have discovered a Server Side Request Forgery in Nexus Repository 3 potentially leading to network enumeration.
We are highly recommending upgrading all instances of Nexus Repository 3 to 3.36.0 or later. You can download latest version from the following location:
Nexus Repository Manager 3 Download
For detailed information on upgrading, please see the following:
Upgrading Nexus Repository Manager 3.1.0 and Newer
If you run into any problems or have any questions/concerns, please contact us by filing a ticket at https://support.sonatype.com.
Sonatype thanks Zhiyong Chen for finding and reporting this issue.
Frequently Asked Questions:
Q: What is the risk associated with this vulnerability?
A: An authenticated attacker could potentially perform network enumeration via Server Side Request Forgery.
Q: What preconditions must be met in order to be vulnerable?
A: An attacker must have proper credentials for authentication.
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 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 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.