CVE-2014-7271
First published: Mon Oct 06 2014(Updated: )
It was reported that it's possible to login as "sddm" user without authentication: This is since if sddm detects that user in the PamBackend, it has: if (user == "sddm") service = "sddm-greeter"; else if (m_app->session()->path().isEmpty()) service = "sddm-check"; else if (m_autologin) service = "sddm-autologin"; result = m_pam->start(service, user); and the sddm-greeter PAM config basically just has a pam_permit. More info is available at [1]. Upstream patch is at [2]. [1]: <a href="https://bugzilla.suse.com/show_bug.cgi?id=897788#c6">https://bugzilla.suse.com/show_bug.cgi?id=897788#c6</a> [2]: <a href="https://github.com/sddm/sddm/pull/279">https://github.com/sddm/sddm/pull/279</a>
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Sddm Project Sddm | <0.10.0 | |
| Fedoraproject Fedora | =20 | |
| Fedoraproject Fedora | =21 |
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Reference Links
- https://bugzilla.suse.com/show_bug.cgi?id=897788#c6
- https://github.com/sddm/sddm/pull/279
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1149628
- https://bugzilla.redhat.com/show_bug.cgi?id=1149608
- http://lists.fedoraproject.org/pipermail/package-announce/2014-October/141494.html
- http://lists.fedoraproject.org/pipermail/package-announce/2014-October/141550.html
- http://www.openwall.com/lists/oss-security/2014/10/06/4
- http://www.securityfocus.com/bid/70767
- https://exchange.xforce.ibmcloud.com/vulnerabilities/98421
- https://github.com/sddm/sddm/pull/279/files
- https://github.com/sddm/sddm/wiki/0.10.0-Release-Announcement
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- version/fedoraproject fedora/21