#VU1255 Stack-based buffer overflow in Linux kernel - CVE-2016-8399

Vulnerability identifier: #VU1255

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-8399

CWE-ID: CWE-121

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

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 - 4.1.36, 4.4.37, 4.8.13

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External links
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.38
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.1.37

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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.