VDB-152060 · CVE-2020-8863 · GCVE-0-2020-8863

D-Link DIR-867/DIR-878/DIR-882 1.10B04 incorrect implementation of authentication algorithm

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.0	$5k-$25k	0.00

Summaryinfo

A vulnerability was found in D-Link DIR-867, DIR-878 and DIR-882 1.10B04. It has been declared as critical. The impacted element is an unknown function. Such manipulation leads to incorrect implementation of authentication algorithm. This vulnerability is referenced as CVE-2020-8863. The attack needs to be initiated within the local network. No exploit is available.

Detailsinfo

A vulnerability was found in D-Link DIR-867, DIR-878 and DIR-882 1.10B04 (Router Operating System) and classified as critical. Affected by this issue is some unknown processing. The manipulation with an unknown input leads to a incorrect implementation of authentication algorithm vulnerability. Using CWE to declare the problem leads to CWE-303. The requirements for the product dictate the use of an established authentication algorithm, but the implementation of the algorithm is incorrect. Impacted is confidentiality, integrity, and availability. CVE summarizes:

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-867, DIR-878, and DIR-882 routers with firmware 1.10B04. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HNAP login requests. The issue results from the lack of proper implementation of the authentication algorithm. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the router. Was ZDI-CAN-9470.

The weakness was published 03/23/2020. This vulnerability is handled as CVE-2020-8863 since 02/11/2020. Access to the local network is required for this attack to succeed. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 03/24/2020).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Similar entry is available at VDB-152061. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Router Operating System

Vendor

D-Link

Name

Version

1.10B04

License

commercial

Website

Vendor: https://www.dlink.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 8.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 8.8
CNA Vector (Zero Day Initiative): 🔍

CVSSv2info

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: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Incorrect implementation of authentication algorithm
CWE: CWE-303
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/11/2020 🔍
03/23/2020 +41 days 🔍
03/24/2020 +1 days 🔍
04/30/2024 +1498 days 🔍

Sourcesinfo

Vendor: dlink.com

Advisory: zerodayinitiative.com
Status: Not defined

CVE: CVE-2020-8863 (🔍)
GCVE (CVE): GCVE-0-2020-8863
GCVE (VulDB): GCVE-100-152060
See also: 🔍

Entryinfo

Created: 03/24/2020 11:21
Updated: 04/30/2024 23:16
Changes: 03/24/2020 11:21 (36), 03/24/2020 11:26 (12), 04/30/2024 23:02 (16), 04/30/2024 23:16 (20)
Complete: 🔍
Cache ID: 216::103