CVE-2015-3170
First published: Tue May 05 2015(Updated: )
selinux-policy when sysctl fs.protected_hardlinks are set to 0 allows local users to cause a denial of service (SSH login prevention) by creating a hardlink to /etc/passwd from a directory named .config, and updating selinux-policy.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| SELinux |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2015-3170?
CVE-2015-3170 is classified as a moderate severity vulnerability that can cause a denial of service.
How do I fix CVE-2015-3170?
To fix CVE-2015-3170, you should update your SELinux policy to ensure proper access controls and avoid setting fs.protected_hardlinks to 0.
Who is affected by CVE-2015-3170?
CVE-2015-3170 primarily affects systems using SELinux with the fs.protected_hardlinks parameter set to 0.
What types of attacks are possible with CVE-2015-3170?
An attacker can create a hardlink to /etc/passwd, which may prevent SSH logins for local users.
Is there a workaround for CVE-2015-3170?
A potential workaround for CVE-2015-3170 is to set the fs.protected_hardlinks sysctl parameter to a value other than 0.
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