Incorrect Permission Assignment for Critical Resource The advisory has been revoked - it doesn't affect any version of package qemu (opens in a new tab)
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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Test your applications- Snyk IDSNYK-UBUNTU2010-QEMU-1033164
- published17 May 2017
- disclosed17 May 2017
Introduced: 17 May 2017
CVE-2017-7493 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:20.10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Ubuntu.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-7493
- https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
- https://security-tracker.debian.org/tracker/CVE-2017-7493
- https://security.gentoo.org/glsa/201706-03
- https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg03663.html
- http://seclists.org/oss-sec/2017/q2/278
- https://bugzilla.redhat.com/show_bug.cgi?id=1451709
- http://www.securityfocus.com/bid/98574