Vulnerability in Qemu
CVE-2017-7493
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (28.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Qemu — versions 2.7.4
- Debian Linux — versions 8.0
Weakness classification (CWE)
References
- lists.debian.org/debian-lts-announce/2018/09/msg00007.html (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/201706-03 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/98574 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.gnu.org/archive/html/qemu-devel/2017-05/msg03663.html (mailing-list, Patch, Mailing List, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- seclists.org/oss-sec/2017/q2/278 (mailing-list, Patch, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-7493?
- CVE-2017-7493 is a high-severity vulnerability in Qemu, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2017-05-17.
- How severe is CVE-2017-7493?
- High severity. CVSS v3 base score is 7.8 out of 10.