UbuntuUSN-3561-1libvirt update
5.6 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
6.8 Medium
AI Score
Confidence
High
1.9 Low
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:M/Au:N/C:P/I:N/A:N
0.975 High
EPSS
Percentile
100.0%
Releases
- Ubuntu 17.10
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM
Packages
- libvirt - Libvirt virtualization toolkit
Details
It was discovered that microprocessors utilizing speculative execution
and branch prediction may allow unauthorized memory reads via sidechannel
attacks. This flaw is known as Spectre. An attacker in the guest could use
this to expose sensitive guest information, including kernel memory.
This update allows libvirt to expose new CPU features added by microcode
updates to guests. On amd64 and i386, new CPU models that match the updated
microcode features were added with an -IBRS suffix. Certain environments
will require guests to be switched manually to the new CPU models after
microcode updates have been applied to the host.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Ubuntu | 17.10 | noarch | libvirt-bin | < 3.6.0-1ubuntu6.2 | UNKNOWN |
| Ubuntu | 17.10 | noarch | libnss-libvirt | < 3.6.0-1ubuntu6.2 | UNKNOWN |
| Ubuntu | 17.10 | noarch | libnss-libvirt-dbgsym | < 3.6.0-1ubuntu6.2 | UNKNOWN |
| Ubuntu | 17.10 | noarch | libvirt-clients | < 3.6.0-1ubuntu6.2 | UNKNOWN |
| Ubuntu | 17.10 | noarch | libvirt-clients-dbgsym | < 3.6.0-1ubuntu6.2 | UNKNOWN |
| Ubuntu | 17.10 | noarch | libvirt-daemon | < 3.6.0-1ubuntu6.2 | UNKNOWN |
| Ubuntu | 17.10 | noarch | libvirt-daemon-dbgsym | < 3.6.0-1ubuntu6.2 | UNKNOWN |
| Ubuntu | 17.10 | noarch | libvirt-daemon-system | < 3.6.0-1ubuntu6.2 | UNKNOWN |
| Ubuntu | 17.10 | noarch | libvirt-daemon-system-dbgsym | < 3.6.0-1ubuntu6.2 | UNKNOWN |
| Ubuntu | 17.10 | noarch | libvirt-dev | < 3.6.0-1ubuntu6.2 | UNKNOWN |
References
Related
5.6 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
6.8 Medium
AI Score
Confidence
High
1.9 Low
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:M/Au:N/C:P/I:N/A:N
0.975 High
EPSS
Percentile
100.0%