Ubuntu update for Linux kernel (Trusty HWE)

1) Information disclosure

EUVDB-ID: #VU9882

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-2017-5754

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 side-channel attacks, which are also referred to as Meltdown attacks. A local attacker can execute arbitrary code, perform a side-channel analysis of the data cache and gain access to sensitive information including memory from the CPU cache.

Mitigation

Update the affected packages

Ubuntu 12.04 LTS:

linux-image-3.13.0-139-generic-lpae 3.13.0-139.188~precise1

linux-image-generic-lpae-lts-trusty 3.13.0.139.129

linux-image-3.13.0-139-generic 3.13.0-139.188~precise1

linux-image-generic-lts-trusty 3.13.0.139.129

Vulnerable software versions

Ubuntu: 12.04

External links

http://www.ubuntu.com/usn/usn-3524-2/

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.