VDB-123444 · CVE-2018-16236 · GCVE-0-2018-16236

cPanel up to 74 HTML Rendering index.html filename HTML injection

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 cPanel up to 74. It has been declared as problematic. This affects an unknown part of the file frontend/THEME/raw/index.html of the component HTML Rendering. The manipulation of the argument filename results in HTML injection. This vulnerability is cataloged as CVE-2018-16236. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic has been found in cPanel up to 74 (Hosting Control Software). Affected is some unknown processing of the file frontend/THEME/raw/index.html of the component HTML Rendering. The manipulation of the argument filename with an unknown input leads to a html injection vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. CVE summarizes:

cPanel through 74 allows XSS via a crafted filename in the logs subdirectory of a user account, because the filename is mishandled during frontend/THEME/raw/index.html rendering.

The bug was discovered 08/14/2018. The weakness was shared 08/30/2018 (Website). The advisory is shared for download at cxsecurity.com. This vulnerability is traded as CVE-2018-16236 since 08/30/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. 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 16 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:frontend/THEME/raw/index.html it is possible to find vulnerable targets with Google Hacking.

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

Type

Hosting Control Software

Name

cPanel

Version

License

commercial

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: HTML injection
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

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

08/14/2018 🔍
08/30/2018 +15 days 🔍
08/30/2018 +0 days 🔍
08/30/2018 +0 days 🔍
08/31/2018 +1 days 🔍
03/19/2020 +566 days 🔍

Sourcesinfo

Advisory: cxsecurity.com
Status: Not defined

CVE: CVE-2018-16236 (🔍)
GCVE (CVE): GCVE-0-2018-16236
GCVE (VulDB): GCVE-100-123444

Entryinfo

Created: 08/31/2018 08:18
Updated: 03/19/2020 17:26
Changes: 08/31/2018 08:18 (58), 03/19/2020 17:26 (1)
Complete: 🔍
Cache ID: 216::103