BaserCMS up to 3.0.10 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.
4.4	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in BaserCMS up to 3.0.10. This vulnerability affects unknown code. This manipulation causes cross site scripting. This vulnerability is tracked as CVE-2016-4877. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in BaserCMS up to 3.0.10 (Content Management System) and classified as problematic. Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. The summary by CVE is:

Cross-site scripting vulnerability in baserCMS plugin Mail version 3.0.10 and earlier allows remote authenticated attackers to inject arbitrary web script or HTML via unspecified vectors.

The bug was discovered 09/29/2016. The weakness was disclosed 05/12/2017 by Shoji Baba with Mitsui Bussan Secure Directions, Inc. (Website). The advisory is shared at jvn.jp. This vulnerability is known as CVE-2016-4877 since 05/17/2016. The attack can be launched remotely. The successful exploitation needs a single authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 225 days. During that time the estimated underground price was around $0-$5k.

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 SecurityFocus (BID 93217†). The entries VDB-101136, VDB-101138, VDB-101139 and VDB-101140 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Content Management System

Name

• BaserCMS

Version

• 3.0.0
• 3.0.1
• 3.0.2
• 3.0.3
• 3.0.4
• 3.0.5
• 3.0.6
• 3.0.7
• 3.0.8
• 3.0.9
• 3.0.10

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
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: 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

05/17/2016 🔍
09/29/2016 +135 days 🔍
09/29/2016 +0 days 🔍
05/12/2017 +225 days 🔍
05/12/2017 +0 days 🔍
05/13/2017 +1 days 🔍
09/25/2020 +1231 days 🔍

Sourcesinfo

Advisory: jvn.jp
Researcher: Shoji Baba
Organization: Mitsui Bussan Secure Directions, Inc.
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-4877 (🔍)
GCVE (CVE): GCVE-0-2016-4877
GCVE (VulDB): GCVE-100-101137
SecurityFocus: 93217 - baserCMS Multiple HTML Injection and Cross Site Request Forgery Vulnerabilities
OSVDB: - CVE-2016-4877 - Basercms - Basercms - Low

See also: 🔍

Entryinfo

Created: 05/13/2017 08:54
Updated: 09/25/2020 18:56
Changes: 05/13/2017 08:54 (59), 09/25/2020 18:56 (6)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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