Home/CVE/Quick Emulator (Qemu) built with the VirtFS, host directory sharing via Plan 9 File System(9pfs) support, is vulnerable
CVE

CVE-2017-7493

Quick Emulator (Qemu) built with the VirtFS, host directory sharing via Plan 9 File System(9pfs) support, is vulnerable

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.

HIGH · CVSS 7.8 EPSS 0.0006
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-732Incorrect Permission Assignment for Critical Resource
▤

Affected Products & Versions

2
qemu<= 2.9.1
debian linuxall versions
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumPotentially Suspicious Usage Of Qemu
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD17 May 2017 · 03:29 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

7
suse-csafopenSUSE-SU-2024:11287-1
suse-csafSUSE-SU-2017:3084-1
suse-csafSUSE-SU-2017:2963-1
suse-csafSUSE-SU-2017:2969-1
suse-csafSUSE-SU-2017:2946-1
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://seclists.org/oss-sec/2017/q2/278Mailing ListPatchThird Party Advisory
http://www.securityfocus.com/bid/98574Third Party AdvisoryVDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1451709Issue TrackingPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlMailing ListThird Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg03663.htmlMailing ListPatchThird Party Advisory
https://security.gentoo.org/glsa/201706-03Third Party Advisory
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