Link Following Affecting qemu package, versions <1:2.8+dfsg-3ubuntu2.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published26 Apr 2018
- disclosed26 Apr 2018
Introduced: 26 Apr 2018
CVE-2016-9602 (opens in a new tab)How to fix?
Upgrade Ubuntu:20.04 qemu to version 1:2.8+dfsg-3ubuntu2.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Ubuntu.
See How to fix? for Ubuntu:20.04 relevant fixed versions and status.
Qemu before version 2.9 is vulnerable to an improper link following when built with the VirtFS. 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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-9602
- https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
- https://security-tracker.debian.org/tracker/CVE-2016-9602
- https://security.gentoo.org/glsa/201704-01
- https://lists.gnu.org/archive/html/qemu-devel/2017-01/msg06225.html
- https://lists.gnu.org/archive/html/qemu-devel/2017-02/msg04347.html
- http://www.openwall.com/lists/oss-security/2017/01/17/12
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9602
- http://www.securityfocus.com/bid/95461
- http://www.securitytracker.com/id/1037604