VulnerabilityModified
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.
HIGH 7.8EPSS 0.37%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 virtfs metadata files in mapped-file security mode. A guest user could use this flaw to escalate their privileges inside guest.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.37% probability · 30th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-732
- Affected
- qemu/qemu · debian/debian linux
- Source
- secalert@redhat.com
References
- http://seclists.org/oss-sec/2017/q2/278Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/98574Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1451709Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlMailing List, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg03663.htmlMailing List, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/201706-03Third Party Advisory
- http://seclists.org/oss-sec/2017/q2/278Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/98574Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1451709Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlMailing List, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg03663.htmlMailing List, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/201706-03Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.