National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-8578 Detail

Description

The v9fs_iov_vunmarshal function in fsdev/9p-iov-marshal.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) by sending an empty string parameter to a 9P operation.

Source:  MITRE      Last Modified:  11/04/2016

Quick Info

CVE Dictionary Entry:
CVE-2016-8578
Original release date:
11/04/2016
Last revised:
06/30/2017
Source:
US-CERT/NIST

Impact

CVSS Severity (version 3.0):
CVSS v3 Base Score:
6.0 Medium
Vector:
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H (legend)
Impact Score:
4.0
Exploitability Score:
1.5
CVSS Version 3 Metrics:
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
High
User Interaction (UI):
None
Scope (S):
Changed
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High
CVSS Severity (version 2.0):
CVSS v2 Base Score:
1.9 LOW
Vector:
(AV:L/AC:M/Au:N/C:N/I:N/A:P) (legend)
Impact Subscore:
2.9
Exploitability Subscore:
3.4
CVSS Version 2 Metrics:
Access Vector:
Locally exploitable
Access Complexity:
Medium
Authentication:
Not required to exploit
Impact Type:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html External Source SUSE openSUSE-SU-2016:3237
http://www.openwall.com/lists/oss-security/2016/10/10/14 Third Party Advisory External Source MLIST [oss-security] 20161010 Re: CVE request Qemu: 9pfs: potential NULL dereferencein 9pfs routines
http://www.openwall.com/lists/oss-security/2016/10/10/8 Third Party Advisory External Source MLIST [oss-security] 20161010 CVE request Qemu: 9pfs: potential NULL dereferencein 9pfs routines
http://www.securityfocus.com/bid/93474 Third Party Advisory; VDB Entry External Source BID 93474
https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg07143.html Patch; Third Party Advisory External Source MLIST [qemu-devel] 20160927 Re: [PATCH] 9pfs: make unmarshal V9fsString more robust
https://security.gentoo.org/glsa/201611-11 External Source GENTOO GLSA-201611-11

Technical Details

Vulnerability Type (View All)

  • NULL Pointer Dereference (CWE-476)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
cpe:2.3:a:qemu:qemu:-:*:*:*:*:*:*:*

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History 7 change records found - show changes