CVE-2017-7493
Description
Quick Emulator (Qemu) built with the VirtFS, host directory sharing via Plan 9 File System(9pfs) support, is vulnerable to an improper access control issue. It could occur while accessing virtfs metadata files in mapped-file security mode. A guest user could use this flaw to escalate their privileges inside guest.
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.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | 8.0 | affected | |
| debian | bookworm | fixed | 1:2.8+dfsg-6 |
| debian | bullseye | fixed | 1:2.8+dfsg-6 |
| debian | forky | fixed | 1:2.8+dfsg-6 |
| debian | sid | fixed | 1:2.8+dfsg-6 |
| debian | trixie | fixed | 1:2.8+dfsg-6 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| qemu | qemu | {"endIncluding":"2.9.1"} | |
References
- http://seclists.org/oss-sec/2017/q2/278
- http://www.securityfocus.com/bid/98574
- https://bugzilla.redhat.com/show_bug.cgi?id=1451709
- https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
- https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg03663.html
- https://security.gentoo.org/glsa/201706-03
- https://security-tracker.debian.org/tracker/CVE-2017-7493
CWEs
CWE-732
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.