Red Hat update for kernel (Spectre SWAPGS vulnerability)

Published: 2019-09-11 | Updated: 2019-09-11
Severity Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2019-1125
CWE ID CWE-200
Exploitation vector Local
Public exploit N/A
Vulnerable software Red Hat Enterprise Linux Server Subscribe
Vendor Red Hat Inc.

Security Advisory

This security advisory describes one low risk vulnerability.

1) Information disclosure

Severity: Low

CVSSv3: 8.1 [CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:U/RC:C] [PCI]

CVE-ID: CVE-2019-1125

CWE-ID: CWE-200 - Information Exposure

Description

The vulnerability allows a local user to gain access to potentially sensitive information and elevate privileges on the system.

The vulnerability exists when certain central processing units (CPU) speculatively access memory. A local user can gain unauthorized access to sensitive information and elevate privileges on the system.

This issue is a variant of the Spectre Variant 1 speculative execution side channel vulnerability that leverages SWAPGS instructions to bypass KPTI/KVA mitigations.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux Server: 6.5

CPE External links

https://access.redhat.com/errata/RHSA-2019:2695

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.