CVE-2018-18653

The Linux kernel, as used in Ubuntu 18.10 and when booted with UEFI Secure Boot enabled, allows privileged local users to bypass intended Secure Boot restrictions and execute untrusted code by loading arbitrary kernel modules. This occurs because a modified kernel/module.c, in conjunction with certain configuration options, leads to mishandling of the result of signature verification.

CVSS v3.0 7.8 HIGH
CVSS v2.0 7.2 HIGH

7.8^/10

CVSS v3.0 : HIGH

Vector : AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

Vector : AV:L/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://launchpad.net/bugs/1798863	Exploit Issue Tracking Vendor Advisory
https://usn.ubuntu.com/3832-1/	Patch Vendor Advisory
https://usn.ubuntu.com/3835-1/	Patch Vendor Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*

Information

Published : 2018-10-25 17:29

Updated : 2019-10-02 17:03

NVD link : CVE-2018-18653

Mitre link : CVE-2018-18653

JSON object : View

CWE

CWE-347

Improper Verification of Cryptographic Signature

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Products Affected

canonical

ubuntu_linux

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