CVE-2012-4425
Description
libgio, when used in setuid or other privileged programs in spice-gtk and possibly other products, allows local users to gain privileges and execute arbitrary code via the DBUS_SYSTEM_BUS_ADDRESS environment variable. NOTE: it could be argued that this is a vulnerability in the applications that do not cleanse environment variables, not in libgio itself.
Predictions
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.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
libdbus - 'DBUS_SYSTEM_BUS_ADDRESS' Local Privilege Escalation
OS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 0.12-5 |
| sid | Fixed | 0.12-5 |
| forky | Fixed | 0.12-5 |
| bullseye | Fixed | 0.12-5 |
| bookworm | Fixed | 0.12-5 |
References
- http://permalink.gmane.org/gmane.linux.redhat.fedora.extras.cvs/853051
- http://rhn.redhat.com/errata/RHSA-2012-1284.html
- http://www.exploit-db.com/exploits/21323
- http://www.openwall.com/lists/oss-security/2012/09/12/6
- http://www.openwall.com/lists/oss-security/2012/09/14/2
- http://www.openwall.com/lists/oss-security/2012/09/17/2
- http://www.securityfocus.com/bid/55555
- http://www.spinics.net/lists/spice-devel/msg01940.html
- https://bugzilla.redhat.com/show_bug.cgi?id=857283
- https://security-tracker.debian.org/tracker/CVE-2012-4425
CWEs
CWE-264
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.