Vulnerability identifier: #VU7243

Vulnerability 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-2017-1000363

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

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

Vendor: Linux Foundation

Description
The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists due to an integer overflow in the lp_setup() function. a local attacker can append lp=none arguments to the kernel command line and gain root privileges on the target system.

Successful exploitation results in privilege escalation.

Mitigation
Update to version 4.11.2.

Vulnerable software versions

Linux kernel: 4.11.1, 4.10.0 - 4.10.17, 4.9.1 - 4.9.35, 4.8.0 - 4.8.17, 4.7.0 - 4.7.10, 4.6.0 - 4.6.7, 4.5.0 - 4.5.7, 4.4.0 - 4.4.75, 4.3.1 - 4.3.6, 4.2.0 - 4.2.8, 4.1.1 - 4.1.42, 4.0.1 - 4.0.9

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External links
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e21f4af170bebf47c187c...

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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.