CVE-2017-1000363 Information

Description

Linux drivers/char/lp.c Out-of-Bounds Write. Due to a missing bounds check and the fact that parport_ptr integer is static a ‘secure boot’ kernel command line adversary (can happen due to bootloader vulns e.g. Google Nexus 6’s CVE-2016-10277 where due to a vulnerability the adversary has partial control over the command line) can overflow the parport_nr array in the following code by appending many (LP_NO) ’lp=none’ arguments to the command line.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

http://www.debian.org/security/2017/dsa-3945 http://www.securityfocus.com/bid/98651 https://alephsecurity.com/vulns/aleph-2017023

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8