CVE-2014-0979
low
CVSS v3
—
CVSS v4 NEW
—
VIR risk
2.1
Description
The start_authentication function in lightdm-gtk-greeter.c in LightDM GTK+ Greeter before 1.7.1 does not properly handle the return value from the lightdm_greeter_get_authentication_user function, which allows local users to cause a denial of service (NULL pointer dereference) via an empty username.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 3 releases
| Version | Status | Fixed in |
|---|---|---|
| 13.1 | Affected | — |
| 12.3 | Affected | — |
| 12.2 | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 1.6.1-5 |
| sid | Fixed | 1.6.1-5 |
| forky | Fixed | 1.6.1-5 |
| bullseye | Fixed | 1.6.1-5 |
| bookworm | Fixed | 1.6.1-5 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | {"endIncluding":"1.7.0"} | |
| lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.1.1 | |
| lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.1.2 | |
| lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.1.3 | |
| lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.1.4 | |
| lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.1.5 | |
| lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.1.6 | |
| lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.3.0 | |
| lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.3.1 | |
| lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.5.0 | |
| lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.5.1 | |
| lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.5.2 | |
| lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.6.0 | |
| lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.6.1 | |
References
- http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128117.html
- http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128150.html
- http://lists.opensuse.org/opensuse-updates/2014-01/msg00048.html
- http://secunia.com/advisories/56211
- http://secunia.com/advisories/56423
- http://www.openwall.com/lists/oss-security/2014/01/07/15
- http://www.securityfocus.com/bid/64679
- https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1266449
- https://bugzilla.novell.com/show_bug.cgi?id=857303
- https://security-tracker.debian.org/tracker/CVE-2014-0979
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.