CVE-2015-0856
published 2015-11-24CVE-2015-0856: 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…
PriorityP418medium4.6CVSS 2.0
AVLACLAuNCPIPAP
EPSS
0.41%
33.6th percentile
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.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | sddm | < sddm 0.12.0-5 (bookworm) | sddm 0.12.0-5 (bookworm) |
| fedoraproject | fedora | — | — |
| sddm_project | sddm | <= 0.12.0 | — |
| sddm_project | sddm | >= 0 < 0.12.0-5 | 0.12.0-5 |
| sddm_project | sddm | >= 0 < 0.12.0-5 | 0.12.0-5 |
| sddm_project | sddm | >= 0 < 0.12.0-5 | 0.12.0-5 |
| sddm_project | sddm | >= 0 < 0.12.0-5 | 0.12.0-5 |
CVSS provenance
nvdv2.04.6MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:P
osv4.6MEDIUM
vendor_debian4.6LOW
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Debian
CVE-2015-0856: sddm - daemon/Greeter.cpp in sddm before 0.13.0 does not properly disable the KDE crash...
vendor_debian·2015·CVSS 4.6
CVE-2015-0856 [MEDIUM] CVE-2015-0856: sddm - daemon/Greeter.cpp in sddm before 0.13.0 does not properly disable the KDE crash...
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.
Scope: local
bookworm: resolved (fixed in 0.12.0-5)
bullseye: resolved (fixed in 0.12.0-5)
forky: resolved (fixed in 0.12.0-5)
sid: resolved (fixed in 0.12.0-5)
trixie: resolved (fixed in 0.12.0-5)
GHSA
GHSA-h2j2-9mv7-h7rv: daemon/Greeter
ghsa_unreviewed·2022-05-17
CVE-2015-0856 [MEDIUM] GHSA-h2j2-9mv7-h7rv: daemon/Greeter
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.
OSV
CVE-2015-0856: daemon/Greeter
osv·2015-11-24·CVSS 4.6
CVE-2015-0856 [MEDIUM] CVE-2015-0856: daemon/Greeter
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2015-0856 sddm: Access to the KDE crash handler
bugzilla·2015-10-15·CVSS 4.6
CVE-2015-0856 [MEDIUM] CVE-2015-0856 sddm: Access to the KDE crash handler
CVE-2015-0856 sddm: Access to the KDE crash handler
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
Discussion:
Created sddm tracking bugs for this issue:
Affects: fedora-all [bug 1271993]
---
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.
---
sddm-0.12.0-5.fc
Bugzilla
CVE-2015-0856 sddm: Access to the KDE crash handler [fedora-all]
bugzilla·2015-10-15·CVSS 4.6
CVE-2015-0856 [MEDIUM] CVE-2015-0856 sddm: Access to the KDE crash handler [fedora-all]
CVE-2015-0856 sddm: Access to the KDE crash handler [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions of Fedora. While
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171443.htmlhttp://www.openwall.com/lists/oss-security/2015/10/14/2http://www.securityfocus.com/bid/77099https://github.com/sddm/sddm/commit/4cfed6b0a625593fb43876f04badc4dd99799d86https://github.com/sddm/sddm/wiki/0.13.0-Release-Announcementhttp://lists.fedoraproject.org/pipermail/package-announce/2015-November/171443.htmlhttp://www.openwall.com/lists/oss-security/2015/10/14/2http://www.securityfocus.com/bid/77099https://github.com/sddm/sddm/commit/4cfed6b0a625593fb43876f04badc4dd99799d86https://github.com/sddm/sddm/wiki/0.13.0-Release-Announcement
2015-11-24
Published