Vulnerability Name:

CVE-2018-6947 (CCN-139487)

Assigned:2018-02-23
Published:2018-02-23
Updated:2019-10-03
Summary:An uninitialised stack variable in the nxfuse component that is part of the Open Source DokanFS library shipped with NoMachine 6.0.66_2 and earlier allows a local low privileged user to gain elevation of privileges on Windows 7 (32 and 64bit), and denial of service for Windows 8 and 10.
CVSS v3 Severity:7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
7.0 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
9.8 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.8 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.2 High (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
10.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-665
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2018-6947

Source: XF
Type: UNKNOWN
nomachine-cve20186947-priv-esc(139487)

Source: CCN
Type: Packet Storm Security [02-23-2018]
NoMachine nxfuse Privilege Escalation

Source: EXPLOIT-DB
Type: EXPLOIT
Offensive Security Exploit Database [02-22-2018]

Source: EXPLOIT-DB
Type: Third Party Advisory, VDB Entry
44167

Source: EXPLOIT-DB
Type: EXPLOIT
Offensive Security Exploit Database [02-22-2018]

Source: EXPLOIT-DB
Type: Third Party Advisory, VDB Entry
44168

Source: MISC
Type: Third Party Advisory
https://www.fidusinfosec.com/nomachine-road-code-execution-without-fuzzing-cve-2018-6947/

Source: CCN
Type: NoMachine Web site
NoMachine

Source: CONFIRM
Type: Vendor Advisory
https://www.nomachine.com/SU02P00194

Source: CONFIRM
Type: Vendor Advisory
https://www.nomachine.com/SU02P00195

Source: CONFIRM
Type: Vendor Advisory
https://www.nomachine.com/TR02P08408

Vulnerable Configuration:Configuration 1:
  • cpe:/a:nomachine:nomachine:*:*:*:*:*:*:*:* (Version <= 6.0.66_2)

    • Configuration 2:
  • cpe:/o:microsoft:windows_10:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_7:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_8:*:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    nomachine nomachine *
    microsoft windows 10 *
    microsoft windows 7 *
    microsoft windows 8 *