Vulnerability in Xen package (CVE-2016-9932)
Summary
CVE-2016-9932: CMPXCHG8B emulation in Xen 3.3.x through 4.7.x on x86 systems allows local HVM guest OS users to obtain sensitive information from host stack memory via a "supposedly-ignored" operand size prefix. Affects xen versions < 4.7.1-r3. Fixed in 4.7.1-r3. How to fix ↓
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Background
The Xen package is a virtualization platform that allows multiple operating systems to run on a single host machine. It provides a hypervisor that manages the virtual machines and facilitates their communication with the underlying hardware. This vulnerability, identified as CVE-2016-9932, affects Xen versions 3.3.x through 4.7.x on x86 systems.
Vulnerability Detail
The vulnerability in Xen arises from a flaw in the CMPXCHG8B emulation. It allows local HVM (Hardware Virtual Machine) guest OS users to access sensitive information from the host stack memory. This information can be obtained by exploiting a supposedly-ignored operand size prefix. The vulnerability has a CVSS score of 3.3, indicating a low level of severity.
How To Fix
Minimum fixed version
4.7.1-r3
This is the first release that contains the fix.
sudo apk add --upgrade xenTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The vulnerability in the Xen package (CVE-2016-9932) allows local HVM guest OS users to access sensitive information from the host stack memory. It is recommended to update the Xen package to version 4.7.1-r3 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for xen →
FAQ
Xen is a virtualization platform that allows multiple operating systems to run on a single host machine.
The vulnerability allows local HVM guest OS users to access sensitive information from the host stack memory.
The CVSS score of this vulnerability is 3.3, indicating a low level of severity.
To fix this vulnerability, update the Xen package to version 4.7.1-r3 or later.
No specific workaround has been mentioned for this vulnerability.
References
Related vulnerabilities
Recent vulnerabilities recorded for xen.
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