Two vulnerabilities in Linux kernel

Published: 2016-12-10

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2016-8399 CVE-2016-8632
CWE-ID	CWE-121
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Linux kernel Operating systems & Components / Operating system
Vendor	Linux Foundation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Stack-based buffer overflow

EUVDB-ID: #VU1255

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-8399

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a local user to cause kernel panic or escalate privileges.

The vulnerability exists due to a boundary error when crating an ICMP header. A local user can create a very short ICMP header and execute arbitrary code within the contest of the kernel.

Successful exploitation of the vulnerability may allow a local user to escalate privileges on the system.

Mitigation

Update to version 4.8.14 or 4.4.38.

Vulnerable software versions

Linux kernel: 4.1.1 - 4.8.13

External links

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.38
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.1.37

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.

2) Stack-based buffer overflow

EUVDB-ID: #VU6394