Vulnerability in Xen
CVE-2014-7155
The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 4.4.x and earlier does not properly check supervisor mode permissions, which allows local HVM users to cause a denial of service (guest crash) or gain guest kernel mode privileges via vectors involving an (1) HLT, (2) LGDT, (3) LIDT, or (4) LMSW instruction.
EPSS: 0.010 (58.3th percentile) — read the EPSS interpretation.
Affected products
- Xen — versions 3.0.2, 3.0.3, 3.0.4
- Debian Debian_linux — versions 7.0
- Fedoraproject Fedora — versions 19, 20
- Opensuse — versions 12.3, 13.1
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_SUSE)
- cve@mitre.org (vendor-advisory, x_refsource_FEDORA, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_SUSE)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Vendor Advisory)
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
- cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
- cve@mitre.org (vendor-advisory, x_refsource_FEDORA, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- cve@mitre.org (x_refsource_SECUNIA, third-party-advisory)
- cve@mitre.org (x_refsource_SECUNIA, third-party-advisory)