VDB-125948 · CVE-2018-18636 · Issue 149785

D-Link DSL-2640T cgi-bin/webcm var:RelaodHref/var:conid cross site scripting

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.
5.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in D-Link DSL-2640T and classified as problematic. This impacts an unknown function of the file cgi-bin/webcm. Such manipulation of the argument var:RelaodHref/var:conid as part of Parameter leads to cross site scripting. This vulnerability is listed as CVE-2018-18636. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in D-Link DSL-2640T (the affected version is unknown). Affected by this issue is an unknown code of the file cgi-bin/webcm. The manipulation of the argument var:RelaodHref/var:conid as part of a Parameter leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

XSS exists in cgi-bin/webcm on D-link DSL-2640T routers via the var:RelaodHref or var:conid parameter.

The bug was discovered 10/12/2018. The weakness was presented 10/24/2018 (Website). The advisory is shared for download at cxsecurity.com. This vulnerability is handled as CVE-2018-18636 since 10/24/2018. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 06/03/2023). The MITRE ATT&CK project declares the attack technique as T1059.007.

The vulnerability was handled as a non-public zero-day exploit for at least 12 days. During that time the estimated underground price was around $5k-$25k.

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

D-Link

Name

DSL-2640T

License

commercial

Website

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

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.2

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

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/12/2018 🔍
10/24/2018 +11 days 🔍
10/24/2018 +0 days 🔍
10/24/2018 +0 days 🔍
10/25/2018 +1 days 🔍
06/03/2023 +1682 days 🔍

Sourcesinfo

Vendor: dlink.com

Advisory: 149785
Status: Not defined

CVE: CVE-2018-18636 (🔍)
GCVE (CVE): GCVE-0-2018-18636
GCVE (VulDB): GCVE-100-125948

Entryinfo

Created: 10/25/2018 07:11
Updated: 06/03/2023 07:09
Changes: 10/25/2018 07:11 (57), 04/06/2020 16:36 (1), 06/03/2023 07:09 (3)
Complete: 🔍
Cache ID: 216::103