Vulnerability Name:

CCN-155908

Published:2019-01-21
Updated:2019-01-21
Summary:Xen could allow a local attacker to obtain sensitive information, caused by the combination of the Spectre V1 and L1TF approach in the in the CPU speculative branch instruction execution feature. An attacker could exploit this vulnerability to obtain data from the cache on hyperthread of a given CPU core and to read out the cached data on another
hyperthread of the same CPU core.
CVSS v3 Severity:7.1 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N)
6.2 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:4.9 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None
Vulnerability Consequences:Obtain Information
References:Source: CCN
Type: Xen Security Advisory XSA-289
Spectre V1 gadgets exploitable with L1TF

Source: XF
Type: UNKNOWN
xen-spectrev1-info-disc(155908)

Vulnerable Configuration:Configuration CCN 1:
  • cpe:/a:xensource:xen:*:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    xensource xen *