CVE-2017-11348 : Security Advisory and Response
Learn about CVE-2017-11348, a security flaw in Octopus Deploy 3.x versions before 3.15.4, allowing users to upload malicious NuGet packages, potentially leading to package overwrites or system file modifications.
In July 2017, CVE-2017-11348 was published, highlighting a vulnerability in Octopus Deploy 3.x versions prior to 3.15.4. This CVE exposes a risk where authenticated users with PackagePush permission can upload malicious NuGet packages, potentially leading to package overwrites or system file modifications due to directory traversal.
Understanding CVE-2017-11348
This section delves into the specifics of the CVE and its implications.
What is CVE-2017-11348?
CVE-2017-11348 pertains to a security flaw in Octopus Deploy 3.x versions before 3.15.4. It allows authorized users to upload crafted NuGet packages that can compromise the integrity of the system by overwriting packages or altering system files.
The Impact of CVE-2017-11348
The vulnerability in CVE-2017-11348 poses a significant risk as it enables potential malicious actors to manipulate system files and compromise the overall security of the affected Octopus Deploy instances.
Technical Details of CVE-2017-11348
Explore the technical aspects of the CVE in this section.
Vulnerability Description
The vulnerability arises from a directory traversal issue within the PackageId value, allowing users with PackagePush permission to upload malicious NuGet packages.
Affected Systems and Versions
- Product: Octopus Deploy 3.x
- Versions Affected: All versions before 3.15.4
Exploitation Mechanism
The exploit involves uploading specially crafted NuGet packages by authenticated users with PackagePush permission, leading to potential package overwrites or system file modifications.
Mitigation and Prevention
Discover the steps to mitigate and prevent exploitation of CVE-2017-11348.
Immediate Steps to Take
- Upgrade Octopus Deploy to version 3.15.4 or newer to mitigate the vulnerability.
- Restrict PackagePush permissions to trusted users only.
Long-Term Security Practices
- Regularly monitor and audit package uploads for any suspicious activity.
- Educate users on safe package handling practices to prevent uploading malicious content.
Patching and Updates
- Stay informed about security updates and patches released by Octopus Deploy.
- Promptly apply patches to ensure the system is protected against known vulnerabilities.