Xen 4.4.x/4.5.x/4.6.x/4.7.x on 64-bit mode Register Operand Processor Host input validation
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
8.6 | $0-$5k | 0.00 |
A vulnerability, which was classified as critical, has been found in Xen 4.4.x/4.5.x/4.6.x/4.7.x on 64-bit mode (Virtualization Software). This issue affects some unknown functionality of the component Register Operand Processor. The manipulation with an unknown input leads to a input validation vulnerability (Host). 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 confidentiality, integrity, and availability.
The bug was discovered 11/22/2016. The weakness was shared 11/22/2016 by George Dunlap with Citrix as XSA-195 as confirmed security advisory (Website). The advisory is shared at xenbits.xen.org. The vendor cooperated in the coordination of the public release. The identification of this vulnerability is CVE-2016-9383 since 11/17/2016. The exploitation is known to be easy. An attack has to be approached locally. A simple authentication is required for exploitation. Neither technical details nor an exploit are publicly available.
The vulnerability scanner Nessus provides a plugin with the ID 900047 , which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276244 (Fedora Security Update for xen (FEDORA-2016-999e1a6927)).
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 vulnerability database at Tenable (900047). The entries 92454, 92455, 92462 and 93307 are related to this item.
Product
Type
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
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CVSSv3
VulDB Meta Base Score: 8.8VulDB Meta Temp Score: 8.6
VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 8.8
NVD Vector: 🔍
CVSSv2
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
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Exploiting
Name: HostClass: Input validation / Host
CWE: CWE-20
ATT&CK: Unknown
Local: Yes
Remote: No
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Nessus ID: 900047
Nessus File: 🔍
OpenVAS ID: 703729
OpenVAS Name: Debian Security Advisory DSA 3729-1 (xen - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Timeline
11/17/2016 🔍11/22/2016 🔍
11/22/2016 🔍
11/22/2016 🔍
11/22/2016 🔍
11/25/2016 🔍
11/25/2016 🔍
01/23/2017 🔍
10/04/2022 🔍
Sources
Advisory: XSA-195Researcher: George Dunlap
Organization: Citrix
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍
CVE: CVE-2016-9383 (🔍)
OVAL: 🔍
SecurityTracker: 1037346
SecurityFocus: 94474 - Xen CVE-2016-9383 Memory Corruption Vulnerability
See also: 🔍
Entry
Created: 11/25/2016 11:52Updated: 10/04/2022 14:14
Changes: 11/25/2016 11:52 (69), 06/10/2019 06:46 (14), 10/04/2022 14:14 (3)
Complete: 🔍
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