| Name | CVE-2017-7471 |
| 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 files on a shared host directory. A privileged user inside guest could use this flaw to access host file system beyond the shared folder and potentially escalating their privileges on a host. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1035-1 |
| Debian Bugs | 860785 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| qemu (PTS) | jessie, jessie (lts) | 1:2.1+dfsg-12+deb8u23 | fixed |
| stretch (security) | 1:2.8+dfsg-6+deb9u17 | fixed |
| stretch (lts), stretch | 1:2.8+dfsg-6+deb9u19 | fixed |
| buster (security), buster, buster (lts) | 1:3.1+dfsg-8+deb10u12 | fixed |
| bullseye | 1:5.2+dfsg-11+deb11u3 | fixed |
| bullseye (security) | 1:5.2+dfsg-11+deb11u2 | fixed |
| bookworm | 1:7.2+dfsg-7+deb12u7 | fixed |
| sid, trixie | 1:9.2.0+ds-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| qemu | source | wheezy | 1.1.2+dfsg-6+deb7u22 | | DLA-1035-1 | |
| qemu | source | jessie | (not affected) | | | |
| qemu | source | (unstable) | 1:2.8+dfsg-5 | | | 860785 |
| qemu-kvm | source | (unstable) | (not affected) | | | |
Notes
[jessie] - qemu <not-affected> (Vulnerable code introduced with fix for CVE-2016-9602)
[wheezy] - qemu <not-affected> (Vulnerable code introduced with fix for CVE-2016-9602)
- qemu-kvm <not-affected> (Vulnerable code introduced with fix for CVE-2016-9602)
Fixed by: http://git.qemu-project.org/?p=qemu.git;a=commitdiff;h=9c6b899f7a46893ab3b671e341a2234e9c0c060e
Fixed by (stable-2.8): http://git.qemu-project.org/?p=qemu.git;a=commitdiff;h=96bae145e27d4df62671b4eebd6c735f412016cf (v2.8.1.1)
https://bugzilla.redhat.com/show_bug.cgi?id=1443401
Introduced by: http://git.qemu-project.org/?p=qemu.git;a=commitdiff;h=acf22d2264a131ad2695b5a18746dabf0cc8b843
which is part of the fix for CVE-2016-9602.