Red Hat Enterprise Linux 5 Extended Lifecycle Support update for kernel

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

Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for IBM z Systems: 5.0

Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems): 5.0

Red Hat Enterprise Linux Server - Extended Life Cycle Support: 5.0

kernel (Red Hat package): 2.6.18-8.1.1.el5 - 2.6.18-426.el5

Red Hat Enterprise Linux Server: v.5

External links

http://access.redhat.com/errata/RHSA-2018:1196

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.