Xen - Security Update (CVE-2016-7092, CVE-2016-7094)
Summary
DLA-614-1: xen - security update. Affects xen versions < 4.1.6.lts1-2. Fixed in 4.1.6.lts1-2. How to fix ↓
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Background
Xen is a hypervisor that provides virtualization services for x86-compatible computers. It allows multiple operating systems to run concurrently on a single physical machine. Xen is widely used in cloud computing platforms and virtualization solutions. However, it has been discovered that Xen is vulnerable to multiple security issues.
Vulnerability Detail
The first vulnerability, CVE-2016-7092 (XSA-185), allows a malicious 32-bit PV guest administrator to escalate their privilege to that of the host by exploiting a flaw in the handling of L3 pagetable entries. The second vulnerability, CVE-2016-7094 (XSA-187), affects x86 HVM guests running with shadow paging. A malicious HVM guest administrator can cause Xen to fail a bug check, resulting in a denial of service to the host.
How To Fix
Minimum fixed version
4.1.6.lts1-2
This is the first release that contains the fix.
sudo apt-get install --only-upgrade xenTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Conclusion
Multiple vulnerabilities have been discovered in Xen, a widely used hypervisor. These vulnerabilities can allow privilege escalation and denial of service attacks. It is crucial to upgrade your Xen packages to the recommended versions to mitigate these risks. For further support on vulnerability remediation, you can contact DevNack.com.
See every vulnerability recorded for xen →
FAQ
Xen is a hypervisor that allows multiple operating systems to run concurrently on a single physical machine.
CVE-2016-7092 is a vulnerability in Xen that allows a malicious 32-bit PV guest administrator to escalate their privilege to that of the host.
CVE-2016-7094 is a vulnerability in Xen that affects x86 HVM guests running with shadow paging. A malicious HVM guest administrator can cause Xen to fail a bug check, resulting in a denial of service to the host.
To fix these vulnerabilities, upgrade your Xen packages to the recommended versions.
No specific workarounds have been mentioned for these vulnerabilities.
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