VDB-112268 · CVE-2017-18046 · GCVE-0-2017-18046

Dasan GPON ONT WiFi Router H640X 2.77p1-1124/3.03p2-1146/12.02-01121 login_action.cgi login_action POST Request memory corruption

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.
8.3	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Dasan GPON ONT WiFi Router H640X 2.77p1-1124/3.03p2-1146/12.02-01121. This affects the function login_action of the file /cgi-bin/login_action.cgi. Such manipulation as part of POST Request leads to memory corruption. This vulnerability is listed as CVE-2017-18046. The attack may be performed from remote. There is no available exploit. Restrictive firewalling should be applied.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Dasan GPON ONT WiFi Router H640X 2.77p1-1124/3.03p2-1146/12.02-01121 (Router Operating System). Affected by this issue is the function login_action of the file /cgi-bin/login_action.cgi. The manipulation as part of a POST Request leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Buffer overflow on Dasan GPON ONT WiFi Router H640X 12.02-01121 2.77p1-1124 and 3.03p2-1146 devices allows remote attackers to execute arbitrary code via a long POST request to the login_action function in /cgi-bin/login_action.cgi (aka cgipage.cgi).

The bug was discovered 01/21/2018. The weakness was presented 01/21/2018 (Website). The advisory is shared for download at blogs.securiteam.com. This vulnerability is handled as CVE-2017-18046 since 01/21/2018. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

Addressing this vulnerability is possible by firewalling .

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Router Operating System

Vendor

Dasan

Name

GPON ONT WiFi Router H640X

Version

CPE 2.3info

CPE 2.2info

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: 7.1
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: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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: Firewall
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/21/2018 🔍
01/21/2018 +0 days 🔍
01/21/2018 +0 days 🔍
01/21/2018 +0 days 🔍
01/22/2018 +1 days 🔍
12/26/2019 +703 days 🔍

Sourcesinfo

Advisory: blogs.securiteam.com⛔
Status: Not defined

CVE: CVE-2017-18046 (🔍)
GCVE (CVE): GCVE-0-2017-18046
GCVE (VulDB): GCVE-100-112268

Entryinfo

Created: 01/22/2018 07:52
Updated: 12/26/2019 11:12
Changes: 01/22/2018 07:52 (59), 12/26/2019 11:12 (1)
Complete: 🔍
Cache ID: 216:839:103