Zhone zNID GPON 2426A up to S3.0 Web Admin Portal backupsettings.html sessionKey credentials management

EntryHistoryDiffjsonxmlCTI

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.
6.3	$0-$5k	0.00

A vulnerability has been found in Zhone zNID GPON 2426A up to S3.0 and classified as problematic. Affected by this vulnerability is an unknown code of the file backupsettings.html of the component Web Admin Portal. The manipulation of the argument sessionKey as part of a Parameter leads to a credentials management vulnerability. The CWE definition for the vulnerability is CWE-255. As an impact it is known to affect confidentiality. The summary by CVE is:

backupsettings.html in the web administrative portal in Zhone zNID GPON 2426A before S3.0.501 places a session key in a URL, which allows remote attackers to obtain arbitrary user passwords via the sessionKey parameter in a getConfig action to backupsettings.conf.

The bug was discovered 10/12/2015. The weakness was presented 10/17/2017 as not defined posting (Bugtraq). It is possible to read the advisory at securityfocus.com. This vulnerability is known as CVE-2014-8357 since 10/20/2014. The exploitation appears to be easy. The attack can be launched remotely. A single authentication is needed for exploitation. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1552 according to MITRE ATT&CK.

A public exploit has been developed by Lyon Yang and been published before and not just after the advisory. It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 736 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:backupsettings.html it is possible to find vulnerable targets with Google Hacking.

Upgrading to version S3.0.501 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Exploit-DB (38453). See 107924 and 146041 for similar entries.

Productinfo

Vendor

Zhone

Name

zNID GPON 2426A

Version

S3.0

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
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: Credentials management
CWE: CWE-255
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Lyon Yang
Download: 🔍
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: zNID GPON 2426A S3.0.501

Timelineinfo

10/20/2014 🔍
10/12/2015 +357 days 🔍
10/13/2015 +1 days 🔍
10/13/2015 +0 days 🔍
10/17/2017 +735 days 🔍
10/17/2017 +0 days 🔍
10/18/2017 +1 days 🔍
01/03/2023 +1903 days 🔍

Sourcesinfo

Advisory: 133921⛔
Status: Not defined

CVE: CVE-2014-8357 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 10/18/2017 08:59
Updated: 01/03/2023 18:02
Changes: 10/18/2017 08:59 (71), 11/25/2019 15:29 (1), 01/03/2023 18:02 (4)
Complete: 🔍