Bug 1271992 (CVE-2015-0856) - CVE-2015-0856 sddm: Access to the KDE crash handler
Summary: CVE-2015-0856 sddm: Access to the KDE crash handler
Status: CLOSED CURRENTRELEASE
Alias: CVE-2015-0856
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20151014,repor...
Keywords: Security
Depends On: 1271993
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-10-15 08:54 UTC by Adam Mariš
Modified: 2019-06-08 20:47 UTC (History)
7 users (show)

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Clone Of:
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Last Closed: 2016-01-12 13:37:53 UTC

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Description Adam Mariš 2015-10-15 08:54:31 UTC 
A vulnerability in sddm was found allowing shell access to the sddm user in case of a crash. Some themes may use KDE components which will automatically load KDE's crash handler. If the greeter were to then somehow crash, that would leave a crash handler allowing other actions, albeit as the locked down SDDM user. Only SDDM users using the breeze theme from plasma-workspace are affected.

Upstream patch:

https://github.com/sddm/sddm/commit/4cfed6b0a625593fb43876f04badc4dd99799d86
Comment 1 Adam Mariš 2015-10-15 08:54:58 UTC 
Created sddm tracking bugs for this issue:

Affects: fedora-all [bug 1271993]
Comment 2 Fedora Update System 2015-10-31 16:09:35 UTC 
sddm-0.12.0-5.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 3 Fedora Update System 2015-11-13 01:53:40 UTC 
sddm-0.12.0-5.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
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