Xen on x86 Qemu out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Xen on x86 and classified as critical. The affected element is an unknown function of the component Qemu. The manipulation results in out-of-bounds. This vulnerability was named CVE-2017-2615. The attack needs to be approached locally. There is no available exploit. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Xen on x86 (Virtualization Software) (the affected version is unknown). It has been classified as critical. Affected is an unknown code of the component Qemu. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability.

The bug was discovered 02/07/2017. The weakness was presented 02/10/2017 by Li Qiang with 360.cn Inc. as XSA-208 as confirmed security advisory (Website). The advisory is shared for download at xenbits.xen.org. This vulnerability is traded as CVE-2017-2615 since 12/01/2016. The attack needs to be approached locally. A authentication is needed for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 101434 (Virtuozzo 7 : kmod-kvm / kmod-kvm-debug / kvm / kvm-qemu-img / etc (VZLSA-2017-0454)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Virtuozzo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157395 (Oracle Enterprise Linux Security Update for qemu-kvm (ELSA-2017-0396)).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (101434), SecurityFocus (BID 95990†) and SecurityTracker (ID 1037804†). See VDB-97205 for similar entry. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.6

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.1
NVD Vector: 🔍

CNA Base Score: 5.5
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 101434
Nessus Name: Virtuozzo 7 : kmod-kvm / kmod-kvm-debug / kvm / kvm-qemu-img / etc (VZLSA-2017-0454)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 881932
OpenVAS Name: CentOS Update for kmod-kvm CESA-2017:0454 centos5
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Timelineinfo

12/01/2016 🔍
02/01/2017 +62 days 🔍
02/07/2017 +6 days 🔍
02/10/2017 +3 days 🔍
02/10/2017 +0 days 🔍
02/10/2017 +0 days 🔍
02/13/2017 +3 days 🔍
07/13/2017 +150 days 🔍
07/02/2018 +353 days 🔍
11/14/2022 +1596 days 🔍

Sourcesinfo

Advisory: XSA-208
Researcher: Li Qiang
Organization: 360.cn Inc.
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-2615 (🔍)
GCVE (CVE): GCVE-0-2017-2615
GCVE (VulDB): GCVE-100-96828
SecurityFocus: 95990 - QEMU 'hw/display/cirrus_vga.c' Remote Code Execution Vulnerability
OSVDB: - CVE-2017-2615 - QEMU - Cirrus CLGD Out-of-Bounds Access Issue
SecurityTracker: 1037804

See also: 🔍

Entryinfo

Created: 02/13/2017 15:19
Updated: 11/14/2022 08:07
Changes: 02/13/2017 15:19 (79), 08/14/2020 10:24 (8), 11/14/2022 08:01 (4), 11/14/2022 08:07 (12)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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