Ubuntu update for libvirt



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-5715
CWE-ID CWE-200
Exploitation vector Local
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU9883

Risk: Low

CVSSv4.0: 5.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2017-5715

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: Yes

Description

The vulnerability allows a local attacker to obtain potentially sensitive information.

The vulnerability exists in Intel CPU hardware due to improper implementation of the speculative execution of instructions. A local attacker can utilize branch target injection, execute arbitrary code, perform a side-channel attack and read sensitive memory information.

Mitigation

Update the affected packages

Ubuntu 17.10:
libvirt0 3.6.0-1ubuntu6.2
libvirt-bin 3.6.0-1ubuntu6.2
Ubuntu 16.04 LTS:
libvirt0 1.3.1-1ubuntu10.17
libvirt-bin 1.3.1-1ubuntu10.17
Ubuntu 14.04 LTS:
libvirt0 1.2.2-0ubuntu13.1.25
libvirt-bin 1.2.2-0ubuntu13.1.25

Vulnerable software versions

Ubuntu: 14.04 - 17.10

CPE2.3 External links

https://www.ubuntu.com/usn/usn-3561-1/


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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