CVE-2017-12840

CVSS V2 High 7.2 CVSS V3 High 7.8
Description
A kernel driver, namely DLMFENC.sys, bundled with the DESLock+ client application 4.8.16 and earlier contains a locally exploitable heap based buffer overflow in the handling of an IOCTL message of type 0x0FA4204. The vulnerability is present due to the kernel driver failing to allocate sufficient memory on the kernel heap to contain a user supplied string as such the string is copied into a buffer of constant size (0x1000-bytes) and thus an overflow condition results. Access to the kernel driver is permitted through an obfuscated interface whereby bytes of user supplied message are "authenticated" via an obfuscation routine employing a linear equation.
Overview
  • CVE ID
  • CVE-2017-12840
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2017-08-28T19:29:00
  • Last Modified Date
  • 2017-09-08T16:11:20
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:deslock:deslock\+:*:*:*:*:*:*:*:* 1 OR 4.8.16
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:C/I:C/A:C
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.2
  • Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 7.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1.8
  • Impact Score
  • 5.9
References
History
Created Old Value New Value Data Type Notes
2022-05-10 08:38:15 Added to TrackCVE
2022-12-02 20:20:18 2017-08-28T19:29Z 2017-08-28T19:29:00 CVE Published Date updated
2022-12-02 20:20:18 2017-09-08T16:11:20 CVE Modified Date updated
2022-12-02 20:20:18 Analyzed Vulnerability Status updated