National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2016-6888 Detail

Description

Integer overflow in the net_tx_pkt_init function in hw/net/net_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (QEMU process crash) via the maximum fragmentation count, which triggers an unchecked multiplication and NULL pointer dereference.

Source:  MITRE
Description Last Modified:  12/09/2016

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 4.4 MEDIUM
Vector: AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H (V3 legend)
Impact Score: 3.6
Exploitability Score: 0.8

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 2.1 LOW
Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 3.9

Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.qemu.org/?p=qemu.git;a=commit;h=47882fa4975bf0b58dd74474329fdd7154e8f04c Issue Tracking Patch
http://www.openwall.com/lists/oss-security/2016/08/19/10 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/08/19/6 Mailing List Third Party Advisory
http://www.securityfocus.com/bid/92556 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2017:2392
https://access.redhat.com/errata/RHSA-2017:2408
https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg03176.html Patch Vendor Advisory
https://security.gentoo.org/glsa/201609-01

Technical Details

Vulnerability Type (View All)

  • Integer Overflow or Wraparound (CWE-190)
  • 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

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-6888
NVD Published Date:
12/09/2016
NVD Last Modified:
01/04/2018