Brother MFC-J6973CDW Cookie AuthCookie improper authentication

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.
8.2	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Brother MFC-J6973CDW, MFC-J4420DW, MFC-8710DW, MFC-J4620DW, MFC-L8850CDW, MFC-J3720, MFC-J6520DW, MFC-L2740DW, MFC-J5910DW, MFC-J6920DW, MFC-L2700DW, MFC-9130CW, MFC-9330CDW, MFC-9340CDW, MFC-J5620DW and MFC-J6720DW and classified as critical. The impacted element is an unknown function of the component Cookie Handler. Performing a manipulation of the argument AuthCookie results in improper authentication. This vulnerability is identified as CVE-2017-7588. The attack can be initiated remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in Brother MFC-J6973CDW, MFC-J4420DW, MFC-8710DW, MFC-J4620DW, MFC-L8850CDW, MFC-J3720, MFC-J6520DW, MFC-L2740DW, MFC-J5910DW, MFC-J6920DW, MFC-L2700DW, MFC-9130CW, MFC-9330CDW, MFC-9340CDW, MFC-J5620DW and MFC-J6720DW. This affects an unknown part of the component Cookie Handler. The manipulation of the argument AuthCookie with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

On certain Brother devices, authorization is mishandled by including a valid AuthCookie cookie in the HTTP response to a failed login attempt. Affected models are: MFC-J6973CDW MFC-J4420DW MFC-8710DW MFC-J4620DW MFC-L8850CDW MFC-J3720 MFC-J6520DW MFC-L2740DW MFC-J5910DW MFC-J6920DW MFC-L2700DW MFC-9130CW MFC-9330CDW MFC-9340CDW MFC-J5620DW MFC-J6720DW MFC-L8600CDW MFC-L9550CDW MFC-L2720DW DCP-L2540DW DCP-L2520DW HL-3140CW HL-3170CDW HL-3180CDW HL-L8350CDW HL-L2380DW ADS-2500W ADS-1000W ADS-1500W.

The bug was discovered 04/12/2017. The weakness was released 04/12/2017 (Website). It is possible to read the advisory at cxsecurity.com. This vulnerability is uniquely identified as CVE-2017-7588 since 04/08/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept.

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

The vulnerability is also documented in the vulnerability database at Exploit-DB (41863). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• Brother

Name

• MFC-8710DW
• MFC-9130CW
• MFC-9330CDW
• MFC-9340CDW
• MFC-J3720
• MFC-J4420DW
• MFC-J4620DW
• MFC-J5620DW
• MFC-J5910DW
• MFC-J6520DW
• MFC-J6720DW
• MFC-J6920DW
• MFC-J6973CDW
• MFC-L2700DW
• MFC-L2740DW
• MFC-L8850CDW

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 6.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

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: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

OpenVAS ID: 103173
OpenVAS Name: Brother Devices - Authentication Bypass / Password Change Exploit
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/08/2017 🔍
04/12/2017 +4 days 🔍
04/12/2017 +0 days 🔍
04/12/2017 +0 days 🔍
04/12/2017 +0 days 🔍
08/25/2024 +2692 days 🔍

Sourcesinfo

Advisory: cxsecurity.com
Status: Not defined

CVE: CVE-2017-7588 (🔍)
GCVE (CVE): GCVE-0-2017-7588
GCVE (VulDB): GCVE-100-99711
OSVDB: - CVE-2017-7588 - Brother - Multiple Products - Authentication Bypass Issue

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/12/2017 20:37
Updated: 08/25/2024 04:53
Changes: 04/12/2017 20:37 (54), 08/29/2020 18:27 (11), 08/25/2024 04:53 (18)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

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