CVE-2017-7493

NameCVE-2017-7493
DescriptionQuick 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-1035-1, DLA-1497-1, DLA-965-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
qemu (PTS)jessie, jessie (lts)1:2.1+dfsg-12+deb8u23fixed
stretch (security)1:2.8+dfsg-6+deb9u17fixed
stretch (lts), stretch1:2.8+dfsg-6+deb9u19fixed
buster (security), buster, buster (lts)1:3.1+dfsg-8+deb10u12fixed
bullseye1:5.2+dfsg-11+deb11u3fixed
bullseye (security)1:5.2+dfsg-11+deb11u2fixed
bookworm1:7.2+dfsg-7+deb12u7fixed
sid, trixie1:9.2.0+ds-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
qemusourcewheezy1.1.2+dfsg-6+deb7u22DLA-1035-1
qemusourcejessie1:2.1+dfsg-12+deb8u7DLA-1497-1
qemusource(unstable)1:2.8+dfsg-6
qemu-kvmsourcewheezy1.1.2+dfsg-6+deb7u22DLA-965-1
qemu-kvmsource(unstable)(unfixed)

Notes

https://bugzilla.redhat.com/show_bug.cgi?id=1451709
https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg03663.html

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