#VU8638 Memory corruption in Linux kernel - CVE-2017-1000253

Vulnerability identifier: #VU8638

Vulnerability risk: Low

CVSSv4.0: 8.5 [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:A/U:Clear]

CVE-ID: CVE-2017-1000253

CWE-ID: CWE-119

Exploitation vector: Local

Exploit availability: Yes

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

Vendor: Linux Foundation

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to an error when loading of Executable and Linkable Format (ELF) executables. A local user can create a specially crafted ELF binary, trigger memory corruption and execute arbitrary code on the vulnerable system with root privileges.

Mitigation
Install update from vendor's GIT repository:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=a87938b2e246b81b4fb713e...

Vulnerable software versions

Linux kernel: 3.6 - 3.6.11, 3.7 - 3.7.10, 3.8 - 3.8.13, 3.9 - 3.9.11, 3.10 - 3.10.107

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External links
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=a87938b2e246b81b4fb713e...
https://seclists.org/oss-sec/2017/q3/541

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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?

Yes. This vulnerability is being exploited in the wild.