10 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
8.8 High
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.967 High
EPSS
Percentile
99.7%
D-Link DIR-850L, firmware versions 1.14B07, 2.07.B05, and possibly others, contains a stack-based buffer overflow vulnerability in the web administration interface HNAP service. Other models may also be affected.
CWE-121: Stack-based Buffer Overflow - CVE-2017-3193
D-Link DIR-850L, firmware versions 1.14B07, 2.07.B05, and possibly others, contains a stack-based buffer overflow vulnerability in the web administration interface HNAP service. An unauthenticated attacker may send a specially crafted POST request to http://<router-ip>/HNAP1/ with modified HNAP_AUTH
and SOAPAction
headers to overflow the buffer and execute arbitrary code as root. By default, remote administration is disabled, which limits web interface access to LAN-connected hosts. Other models and firmware versions may also be affected.
The DIR-850L is reportedly also affected by CVE-2016-6563, previously disclosed in vulnerability note VU#677427.
A remote, unauthenticated attacker can make a specially crafted POST request to gain arbitrary code execution as root.
The CERT/CC is currently unaware of a practical solution to this problem. The vendor has publicly disclosed the issue along with beta firmware releases (versions 1.14B07 h2ab BETA1 and 2.07B05 h1ke BETA1, depending on the device’s hardware revision), which are available from the product information page, but it is unclear whether the beta releases should be considered a proper solution. Users who do not wish to apply a beta firmware update should consider the following workaround:
Restrict Access
As a general good security practice, only allow connections from trusted hosts and networks. Users are strongly encouraged to disable remote administration if it has been previously enabled.
305448
Filter by status: All Affected Not Affected Unknown
Filter by content: __ Additional information available
__ Sort by: Status Alphabetical
Expand all
Javascript is disabled. Click here to view vendors.
Notified: January 18, 2017 Updated: March 08, 2017
Affected
We have not received a statement from the vendor.
We are not aware of further vendor information regarding this vulnerability.
Group | Score | Vector |
---|---|---|
Base | 8.3 | AV:A/AC:L/Au:N/C:C/I:C/A:C |
Temporal | 6.5 | E:POC/RL:OF/RC:C |
Environmental | 4.9 | CDP:ND/TD:M/CR:ND/IR:ND/AR:ND |
Thanks to Sergi Martinez (@zlowram_) of NCC Group for reporting this vulnerability.
This document was written by Joel Land.
CVE IDs: | CVE-2017-3193 |
---|---|
Date Public: | 2017-03-08 Date First Published: |
10 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
8.8 High
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.967 High
EPSS
Percentile
99.7%