CVE-2012-0218
First published: Mon Dec 03 2012(Updated: )
Xen 3.4, 4.0, and 4.1, when the guest OS has not registered a handler for a syscall or sysenter instruction, does not properly clear a flag for exception injection when injecting a General Protection Fault, which allows local PV guest OS users to cause a denial of service (guest crash) by later triggering an exception that would normally be handled within Xen.
Credit: security@debian.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen XAPI | =3.4.0 | |
| Xen XAPI | =4.0.0 | |
| Xen XAPI | =4.1.0 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2012-0218?
CVE-2012-0218 has a severity rating that indicates it can lead to a denial of service by crashing the guest OS.
How do I fix CVE-2012-0218?
To fix CVE-2012-0218, upgrade to a version of Xen that is patched against this vulnerability.
What software versions are affected by CVE-2012-0218?
CVE-2012-0218 affects Xen versions 3.4.0, 4.0.0, and 4.1.0.
Can CVE-2012-0218 be exploited remotely?
No, CVE-2012-0218 requires local access to the guest OS to exploit.
What impact does CVE-2012-0218 have on virtualized environments?
CVE-2012-0218 can cause a denial of service by crashing the guest OS, impacting availability in virtualized environments.
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