Bug 1271992 – CVE-2015-0856 sddm: Access to the KDE crash handler

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

Aliases:	CVE-2015-0856

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20151014,repor...
Keywords:	Security

Depends On:	1271993
Blocks:
	Show dependency tree / graph

Reported:	2015-10-15 04:54 EDT by Adam Mariš
Modified:	2016-01-12 08:37 EST (History)
CC List:	7 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-01-12 08:37:53 EST
Type:	---
Regression:	---
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Documentation:	---
CRM:
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
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Description Adam Mariš 2015-10-15 04:54:31 EDT

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 04:54:58 EDT

Created sddm tracking bugs for this issue:

Affects: fedora-all [bug 1271993]

Comment 2 Fedora Update System 2015-10-31 12:09:35 EDT

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 2015-11-12 20:53:40 EST

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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