A security issue and a vulnerability have been reported in libvirt, which can be exploited by malicious people to bypass certain security restrictions and cause a DoS (Denial of Service).
1) The libvirt "virNodeDeviceDettach()", "virNodeDeviceReset()", "virDomainRevertToSnapshot()", and "virDomainSnapshotDelete()" API calls are not properly enforcing read-only connections, which can be exploited to e.g. crash the host server.
2) The error reporting mechanism in libvirtd is not thread safe, which can be exploited to cause a crash by triggering errors in multiple threads at the same time.
Solution: Update to version 0.9.0.
Provided and/or discovered by: Red Hat
Original Advisory: libvirt:
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Subject: libvirt Security Bypass and Denial of Service Vulnerabilities
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