Vulnerability CVE-2015-6856


Published: 2016-01-08

Description:
Dell Pre-Boot Authentication Driver (PBADRV.sys) 1.0.1.5 allows local users to write to arbitrary physical memory locations and gain privileges via a 0x0022201c IOCTL call.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Dell Authentication Driver Uncontrolled Write
Matt Bergin
19.12.2015

Type:

CWE-20

(Improper Input Validation)

Vendor: DELL
Product: Pre-boot authentication driver 
Version: 1.0.1.5;

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.2/10
10/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete

 References:
https://www.korelogic.com/Resources/Advisories/KL-001-2015-008.txt
http://www.securityfocus.com/bid/79643
http://www.securityfocus.com/archive/1/archive/1/537161/100/0/threaded
http://seclists.org/fulldisclosure/2015/Dec/81
http://packetstormsecurity.com/files/134987/Dell-Authentication-Driver-Uncontrolled-Write.html

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