CVE-2014-9278
First published: Tue Dec 02 2014(Updated: )
IssueDescription: In a Kerberos environment, OpenSSH allows remote, authenticated users to log in as another user if they are listed in a ~/.k5users file of that other user. This unexpectedly alters the system security policy, as expressed through the ~/.k5users file, because previously, users would have to log in locally, potentially requiring different forms of authentication, before they could use the ksu command to switch users.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| OpenSSH | ||
| Red Hat Enterprise Linux | =7.0 | |
| Fedora | =7 |
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Reference Links
- http://rhn.redhat.com/errata/RHSA-2015-0425.html
- http://thread.gmane.org/gmane.comp.encryption.kerberos.general/15855
- http://www.openwall.com/lists/oss-security/2014/12/02/3
- http://www.openwall.com/lists/oss-security/2014/12/04/17
- http://www.securityfocus.com/bid/71420
- https://bugzilla.mindrot.org/show_bug.cgi?id=1867
- https://bugzilla.redhat.com/show_bug.cgi?id=1169843
- https://exchange.xforce.ibmcloud.com/vulnerabilities/99090
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1149241
- https://rhn.redhat.com/errata/RHSA-2015-0425.html
Frequently Asked Questions
What is the severity of CVE-2014-9278?
CVE-2014-9278 has been classified as a moderate severity vulnerability.
How do I fix CVE-2014-9278?
To fix CVE-2014-9278, ensure that proper controls are in place for the ~/.k5users file and limit user permissions accordingly.
Who is affected by CVE-2014-9278?
CVE-2014-9278 affects users of OpenSSH in a Kerberos environment.
What is the impact of CVE-2014-9278?
The impact of CVE-2014-9278 allows remote authenticated users to impersonate other users inappropriately.
Is there a patch available for CVE-2014-9278?
Yes, a patch for CVE-2014-9278 was included in subsequent OpenSSH releases.
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