Privilege escalation in Linux kernel



Published: 2017-06-26
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-7518
CWE-ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Privilege escalation

EUVDB-ID: #VU7206

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7518

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows an local attacker to gain elevated privileges on the guest system.

The weakness exists due to debug exception error in syscall emulation. A attacker can gain system privileges.

Successful exploitation of the vulnerability results in privilege escalation.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.4.90 - 4.11.5

External links

http://www.spinics.net/lists/kvm/msg151817.html
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c8401dda2f0a00cd25c0af...


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.



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