QEMU Information Transfer Buffer hw/scsi/esp.c input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in QEMU. This impacts an unknown function of the file hw/scsi/esp.c of the component Information Transfer Buffer Handler. Performing a manipulation results in input validation. This vulnerability is identified as CVE-2016-5338. The attack is only possible with local access. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in QEMU (Virtualization Software) (affected version unknown). This affects an unknown functionality of the file hw/scsi/esp.c of the component Information Transfer Buffer Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The (1) esp_reg_read and (2) esp_reg_write functions in hw/scsi/esp.c in QEMU allow local guest OS administrators to cause a denial of service (QEMU process crash) or execute arbitrary code on the QEMU host via vectors related to the information transfer buffer.

The weakness was released 06/14/2016 by Security Team with Huawei (Website). The advisory is shared at lists.gnu.org. This vulnerability is uniquely identified as CVE-2016-5338 since 06/08/2016. The exploitability is told to be easy. An attack has to be approached locally. The successful exploitation needs a authentication. Technical details are known, but no exploit is available.

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 91079†). Entries connected to this vulnerability are available at VDB-87707, VDB-87708, VDB-87712 and VDB-87919. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

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

NVD Base Score: 7.8
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
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: 🔍

Patch: ff589551c8e8e9e95e211b9d8daafb4ed39f1aec

Timelineinfo

06/07/2016 🔍
06/08/2016 +1 days 🔍
06/14/2016 +6 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: Security Team
Organization: Huawei
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-5338 (🔍)
GCVE (CVE): GCVE-0-2016-5338
GCVE (VulDB): GCVE-100-87921
SecurityFocus: 91079 - QEMU 'hw/scsi/esp.c' Multiple Remote Code Execution Vulnerabilities

See also: 🔍

Entryinfo

Created: 06/15/2016 18:17
Updated: 08/23/2022 15:55
Changes: 06/15/2016 18:17 (64), 01/23/2019 08:33 (16), 08/23/2022 15:55 (6)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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