CVE-2017-2623 : Security Advisory and Response
Learn about CVE-2017-2623, a medium severity vulnerability in rpm-ostree and rpm-ostree-client versions before 2017.3. Find out the impact, affected systems, and mitigation steps.
An issue was found in rpm-ostree and rpm-ostree-client versions prior to 2017.3, where the verification of GPG signatures on packages during the layering process is inadequate. This problem is partially addressed in RHEL Atomic Host.
Understanding CVE-2017-2623
What is CVE-2017-2623?
CVE-2017-2623 is a vulnerability in rpm-ostree and rpm-ostree-client versions before 2017.3 that leads to insufficient verification of GPG signatures on packages during the layering process.
The Impact of CVE-2017-2623
The vulnerability has a CVSS base score of 5.3, indicating a medium severity issue. It can result in a high impact on integrity, requiring user interaction for exploitation.
Technical Details of CVE-2017-2623
Vulnerability Description
The flaw allows packages with content lacking GPG signatures or poorly signed content to bypass rejection during the layering process.
Affected Systems and Versions
- Product: rpm-ostree
- Vendor: Project Atomic
- Versions Affected: 2017.3
Exploitation Mechanism
- Attack Complexity: High
- Attack Vector: Network
- Privileges Required: None
- User Interaction: Required
Mitigation and Prevention
Immediate Steps to Take
- Update to version 2017.3 or later of rpm-ostree and rpm-ostree-client.
- Monitor vendor advisories for patches and updates.
Long-Term Security Practices
- Implement secure package management practices.
- Regularly review and verify GPG signatures on packages.
Patching and Updates
- Apply patches provided by the vendor to address the inadequate GPG signature verification issue.