QEMU Non-DMA Mode hw/scsi/esp.c get_cmd memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in QEMU. The impacted element is the function get_cmd of the file hw/scsi/esp.c of the component Non-DMA Mode. This manipulation causes memory corruption. The identification of this vulnerability is CVE-2016-5238. The attack can only be executed locally. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in QEMU (Virtualization Software) (version now known). It has been declared as critical. Affected by this vulnerability is the function get_cmd of the file hw/scsi/esp.c of the component Non-DMA Mode. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The get_cmd function in hw/scsi/esp.c in QEMU might allow local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) via vectors related to reading from the information transfer buffer in non-DMA mode.

The weakness was shared 06/14/2016 by Li Qiang (Website). It is possible to read the advisory at lists.gnu.org. This vulnerability is known as CVE-2016-5238 since 06/02/2016. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 94758 (SUSE SLES12 Security Update : qemu (SUSE-SU-2016:2781-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196546 (Ubuntu Security Notification for Qemu, Qemu-kvm Vulnerabilities (USN-3047-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 6 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (94758) and SecurityFocus (BID 90995†). The entries VDB-87707, VDB-87708, VDB-87712 and VDB-87920 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 94758
Nessus Name: SUSE SLES12 Security Update : qemu (SUSE-SU-2016:2781-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 863050
OpenVAS Name: Fedora Update for qemu FEDORA-2016-73853a7a16
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

06/02/2016 🔍
06/02/2016 +0 days 🔍
06/14/2016 +12 days 🔍
06/14/2016 +0 days 🔍
06/15/2016 +1 days 🔍
11/11/2016 +149 days 🔍
11/14/2016 +3 days 🔍
08/23/2022 +2108 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: USN-3047-1
Researcher: Li Qiang
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-5238 (🔍)
GCVE (CVE): GCVE-0-2016-5238
GCVE (VulDB): GCVE-100-87919
SecurityFocus: 90995 - QEMU 'get_cmd()' Function Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 06/15/2016 18:17
Updated: 08/23/2022 15:43
Changes: 06/15/2016 18:17 (65), 01/23/2019 08:33 (15), 08/23/2022 15:43 (4)
Complete: 🔍
Cache ID: 216::103

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