National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-5126 Detail

Current Description

Heap-based buffer overflow in the iscsi_aio_ioctl function in block/iscsi.c in QEMU allows local guest OS users to cause a denial of service (QEMU process crash) or possibly execute arbitrary code via a crafted iSCSI asynchronous I/O ioctl call.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.8 HIGH
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 1.8


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

CVSS v2.0 Severity and Metrics:

Base Score: 4.6 MEDIUM
Vector: (AV:L/AC:L/Au:N/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 3.9


Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Partial
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
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=a6b3167fa0e825aebb5a7cd8b437b6d41584a196 Issue Tracking Patch
http://rhn.redhat.com/errata/RHSA-2016-1606.html
http://rhn.redhat.com/errata/RHSA-2016-1607.html
http://rhn.redhat.com/errata/RHSA-2016-1653.html
http://rhn.redhat.com/errata/RHSA-2016-1654.html
http://rhn.redhat.com/errata/RHSA-2016-1655.html
http://rhn.redhat.com/errata/RHSA-2016-1756.html
http://rhn.redhat.com/errata/RHSA-2016-1763.html
http://www.openwall.com/lists/oss-security/2016/05/30/6 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/05/30/7 Mailing List Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html Third Party Advisory
http://www.securityfocus.com/bid/90948
http://www.ubuntu.com/usn/USN-3047-1 Third Party Advisory
http://www.ubuntu.com/usn/USN-3047-2 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1340924 Issue Tracking
https://lists.gnu.org/archive/html/qemu-block/2016-05/msg00779.html Mailing List Patch Vendor Advisory
https://security.gentoo.org/glsa/201609-01

Technical Details

Vulnerability Type (View All)

  • Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:2.3:o:oracle:linux:7.0:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 3 ( hide )
 cpe:2.3:a:qemu:qemu:-:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

10 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-5126
NVD Published Date:
06/01/2016
NVD Last Modified:
06/30/2017