CVE-2014-7155

Advisory lineage Upstream: 0 Downstream: 4
Modified
Published: 02 Oct 2014, 14:00
Last modified:06 Aug 2024, 12:40

Vulnerability Summary

Overall Risk (default)
low
23/100
CVSS Score
5.8 MEDIUM
v2.0 (nvd)
EPSS Score
1.03% LOW
1% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 Oct 2014, 14:00
Published
Vulnerability first disclosed
06 Aug 2024, 12:40
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v2.0•MEDIUM•Score: 5.8AV:A/AC:L/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 1.03%• Percentile: 78%

Techniques & Countermeasures

  • CWE-264•Permissions, Privileges, and Access Controls

    Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.

Affected Systems

  • debian•debian_linux

    7.0

  • fedoraproject•fedora

    19 | 20

  • opensuse•opensuse

    12.3 | 13.1

  • xen•xen

    ≤ 4.4.0 | 3.0.2 | 3.0.3 | 3.0.4 | 3.1.3 | 3.1.4 | 3.2.0 | 3.2.1 | 3.2.2 | 3.2.3 | 3.3.0 | 3.3.1 | 3.3.2 | 3.4.0 | 3.4.1 | 3.4.2 | 3.4.3 | 3.4.4 | 4.0.0 | 4.0.1 | 4.0.2 | 4.0.3 | 4.0.4 | 4.1.0 | 4.1.1 | 4.1.2 | 4.1.3 | 4.1.4 | 4.1.5 | 4.1.6.1 | 4.2.0 | 4.2.1 | 4.2.2 | 4.2.3 | 4.3.0 | 4.3.1 | 4.4.0 | 4.4.0:rc1

References (12)