Directory Traversal Affecting lightdm package, versions <1.18.3-0ubuntu1.1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1604-LIGHTDM-368055
- published5 Apr 2017
- disclosed5 Apr 2017
Introduced: 5 Apr 2017
CVE-2017-7358 (opens in a new tab)How to fix?
Upgrade Ubuntu:16.04 lightdm to version 1.18.3-0ubuntu1.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream lightdm package and not the lightdm package as distributed by Ubuntu.
See How to fix? for Ubuntu:16.04 relevant fixed versions and status.
In LightDM through 1.22.0, a directory traversal issue in debian/guest-account.sh allows local attackers to own arbitrary directory path locations and escalate privileges to root when the guest user logs out.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-7358
- https://www.exploit-db.com/exploits/41923/
- http://bazaar.launchpad.net/~lightdm-team/lightdm/trunk/revision/2478
- https://launchpad.net/bugs/1677924
- https://lists.freedesktop.org/archives/lightdm/2017-April/001059.html
- http://www.securityfocus.com/bid/97486
- https://www.ubuntu.com/usn/usn-3255-1/
- https://www.exploit-db.com/exploits/41923