CVE-2015-0856
First published: Tue Nov 24 2015(Updated: )
daemon/Greeter.cpp in sddm before 0.13.0 does not properly disable the KDE crash handler, which allows local users to gain privileges by crashing a greeter when using certain themes, as demonstrated by the plasma-workspace breeze theme.
Credit: security@debian.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Fedora | =22 | |
| SDDM Project SDDM | <=0.12.0 |
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Reference Links
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171443.html
- http://www.openwall.com/lists/oss-security/2015/10/14/2
- http://www.securityfocus.com/bid/77099
- https://github.com/sddm/sddm/commit/4cfed6b0a625593fb43876f04badc4dd99799d86
- https://github.com/sddm/sddm/wiki/0.13.0-Release-Announcement
Frequently Asked Questions
What is the severity of CVE-2015-0856?
CVE-2015-0856 has a medium severity rating due to its potential to allow local users to gain privileges by exploiting a flaw in the KDE crash handler.
How do I fix CVE-2015-0856?
To mitigate CVE-2015-0856, upgrade to SDDM version 0.13.0 or later, which properly disables the KDE crash handler.
Which software is affected by CVE-2015-0856?
CVE-2015-0856 affects SDDM versions up to and including 0.12.0 and Fedora 22.
Can local users exploit CVE-2015-0856?
Yes, local users can exploit CVE-2015-0856 by crashing a greeter using certain themes to gain elevated privileges.
What should I do if I'm using an affected version of SDDM?
If using an affected version of SDDM, it is important to update to a fixed version to prevent privilege escalation vulnerabilities.
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/references
- agent/weakness
- agent/last-modified-date
- agent/severity
- agent/first-publish-date
- agent/description
- agent/event
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/22
- vendor/sddm project
- canonical/sddm project sddm
- version/sddm project sddm/0.12.0