Denial of service in Linux Kernel

Published: 2018-03-02

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2017-18204 CVE-2018-5803
CWE-ID	CWE-119
Exploitation vector	Local
Public exploit	N/A
Vulnerable software	Linux kernel Operating systems & Components / Operating system
Vendor	Linux Foundation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Memory corruption

EUVDB-ID: #VU10811

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-18204

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the ocfs2_setattr function and is due to boundary error. A local attacker can submit a crafted DIO request, trigger memory corruption and cause the service to crash.

Mitigation

Update to version 4.14.2.

Vulnerable software versions

Linux kernel: 4.12 - 4.14.1

Linux kernel:

CPE2.3

External links

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=28f5a8a7c033cbf3e32277f...

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) Memory corruption

EUVDB-ID: #VU10812

Risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-5803