Executive Summary

Summary
Title D-Link routers HNAP service contains stack-based buffer overflow
Informations
NameVU#677427First vendor Publication2016-11-07
VendorVU-CERTLast vendor Modification2016-11-10
Severity (Vendor) N/ARevisionM

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base ScoreN/AAttack RangeN/A
Cvss Impact ScoreN/AAttack ComplexityN/A
Cvss Expoit ScoreN/AAuthenticationN/A
Calculate full CVSS 2.0 Vectors scores

Detail

Vulnerability Note VU#677427

D-Link routers HNAP service contains stack-based buffer overflow

Original Release date: 07 Nov 2016 | Last revised: 10 Nov 2016

Overview

D-Link DIR routers contain a stack-based buffer overflow in the HNAP Login action.

Description

CWE-121: Stack-based Buffer Overflow - CVE-2016-6563

Processing malformed SOAP messages when performing the HNAP Login action causes a buffer overflow in the stack. The vulnerable XML fields within the SOAP body are: Action, Username, LoginPassword, and Captcha.

CVE-2016-6563 appears to affect:

  • DIR-823
  • DIR-822
  • DIR-818L(W)
  • DIR-895L
  • DIR-890L
  • DIR-885L
  • DIR-880L
  • DIR-868L

Impact

A remote, unauthenticated attacker may be able to execute arbitrary code with root privileges.

Solution

Apply an update
D-Link has released firmware updates to address the vulnerabilities in affected routers. Please see their announcement.
If you are unable to update your device, please see the following workarounds:

Restrict Access

As a general good security practice, only allow connections from trusted hosts and networks. Additionally, you may wish to disable remote administration of the router.

Vendor Information (Learn More)

VendorStatusDate NotifiedDate Updated
D-Link Systems, Inc.Affected12 Sep 201627 Oct 2016
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

GroupScoreVector
Base9.3AV:N/AC:M/Au:N/C:C/I:C/A:C
Temporal8.0E:POC/RL:W/RC:ND
Environmental6.0CDP:N/TD:M/CR:ND/IR:ND/AR:ND

References

  • http://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10066
  • https://raw.githubusercontent.com/pedrib/PoC/master/advisories/dlink-hnap-login.txt
  • https://cwe.mitre.org/data/definitions/121.html

Credit

Thanks to Pedro Ribeiro (pedrib@gmail.com) of Agile Information Security for reporting this vulnerability.

This document was written by Trent Novelly.

Other Information

  • CVE IDs:CVE-2016-6563
  • Date Public:07 Nov 2016
  • Date First Published:07 Nov 2016
  • Date Last Updated:10 Nov 2016
  • Document Revision:18

Feedback

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Original Source

Url : http://www.kb.cert.org/vuls/id/677427

Alert History

If you want to see full details history, please login or register.
0
1
2
3
DateInformations
2016-11-11 00:22:29
  • Multiple Updates
2016-11-08 21:23:50
  • Multiple Updates
2016-11-08 00:21:52
  • Multiple Updates
2016-11-07 17:21:34
  • First insertion