Ubuntu update for Linux kernel

Published: 2018-02-22

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2017-5715 CVE-2017-5753
CWE-ID	CWE-200
Exploitation vector	Local
Public exploit	Public exploit code for vulnerability #1 is available. Vulnerability #2 is being exploited in the wild.
Vulnerable software Subscribe	Ubuntu Operating systems & Components / Operating system
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Information disclosure

EUVDB-ID: #VU9883

Risk: Low

CVSSv3.1: 5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2017-5715

CWE-ID: CWE-200 - Information exposure

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 12.04 LTS:

linux-image-3.2.0-133-generic-pae 3.2.0-133.179

linux-image-generic 3.2.0.133.148

linux-image-generic-pae 3.2.0.133.148

linux-image-3.2.0-133-generic 3.2.0-133.179

Vulnerable software versions

Ubuntu: 12.04

External links

http://www.ubuntu.com/usn/usn-3580-1/

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.

2) Information disclosure

EUVDB-ID: #VU9884