SUSE Linux update for the Linux Kernel

1) Race condition

EUVDB-ID: #VU9772

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-2017-17712

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

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

The weakness exists due to a race condition in inet->hdrincl in the raw_sendmsg() function in net/ipv4/raw.c in the Linux kernel. A local attacker can trigger uninitialized stack pointer usage and execute arbitrary code with root privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update the affected packages.

Vulnerable software versions

Linux kernel: 4.0 - 4.14.5

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:4.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.0.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.0.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.0.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.0.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.0.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.0.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.0.7:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.0.8:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.0.9:*:*:*:*:*:*:*

External links

https://lists.opensuse.org/opensuse-security-announce/2018-01/msg00100.html

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.