VDB-93992 · CVE-2016-4964 · OpenVAS 867773

QEMU hw/scsi/mptsas.c mptsas_fetch_requests input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

A vulnerability was found in QEMU (Virtualization Software) (affected version not known) and classified as problematic. Affected by this issue is the function mptsas_fetch_requests of the file hw/scsi/mptsas.c. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. CVE summarizes:

The mptsas_fetch_requests function in hw/scsi/mptsas.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop, and CPU consumption or QEMU process crash) via vectors involving s->state.

The weakness was disclosed 12/10/2016 as confirmed git commit (GIT Repository). The advisory is shared for download at git.qemu.org. This vulnerability is handled as CVE-2016-4964. The attack needs to be approached locally. A simple authentication is necessary for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 93697 (GLSA-201609-01 : QEMU: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.qemu.org.

The vulnerability is also documented in the vulnerability database at Tenable (93697). The entry 93994 is pretty similar.

Productinfo

Type

Name

License

  • open-source

CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 4.6
VulDB Meta Temp Score: 4.6

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.0
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 93697
Nessus Name: GLSA-201609-01 : QEMU: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for qemu FEDORA-2016-a80eab65ba
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍
Patch: 06630554ccbdd25780aa03c3548aaff1eb56dffd

Timelineinfo

05/24/2016 🔍
12/09/2016 +199 days 🔍
12/10/2016 +1 days 🔍
12/10/2016 +0 days 🔍
10/05/2022 +2125 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: git.qemu.org
Status: Confirmed

CVE: CVE-2016-4964 (🔍)
See also: 🔍

Entryinfo

Created: 12/10/2016 01:38 PM
Updated: 10/05/2022 09:26 AM
Changes: 12/10/2016 01:38 PM (40), 01/27/2018 12:41 PM (17), 10/05/2022 09:22 AM (4), 10/05/2022 09:25 AM (11), 10/05/2022 09:26 AM (1)
Complete: 🔍

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