VDB-110189 · CVE-2017-16884 · EDB-ID 43205

MistServer 2.12 /admin/api 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.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability identified as problematic has been detected in MistServer 2.12. This affects an unknown part of the file /admin/api. The manipulation leads to cross site scripting. This vulnerability is traded as CVE-2017-16884. It is possible to initiate the attack remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in MistServer 2.12. This issue affects some unknown functionality of the file /admin/api. The manipulation with an unknown input 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. The summary by CVE is:

Cross-site scripting (XSS) vulnerability in MistServer before 2.13 allows remote attackers to inject arbitrary web script or HTML via vectors related to failed authentication requests alerts.

The bug was discovered 10/19/2017. The weakness was shared 12/01/2017 by hyp3rlinx as EDB-ID 43205 as confirmed exploit (Exploit-DB). The advisory is shared at exploit-db.com. The identification of this vulnerability is CVE-2017-16884 since 11/19/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

A public exploit has been developed by hyp3rlinx and been published immediately after the advisory. The exploit is available 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 43 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 Exploit-DB (43205). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

MistServer

Version

2.12

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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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: 🔍
Access: Public
Status: Proof-of-Concept
Author: hyp3rlinx
Download: 🔍

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: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

10/19/2017 🔍
11/19/2017 +31 days 🔍
12/01/2017 +12 days 🔍
12/01/2017 +0 days 🔍
12/01/2017 +0 days 🔍
12/04/2017 +3 days 🔍
12/06/2017 +2 days 🔍
07/13/2025 +2775 days 🔍

Sourcesinfo

Advisory: EDB-ID 43205
Researcher: hyp3rlinx
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-16884 (🔍)
GCVE (CVE): GCVE-0-2017-16884
GCVE (VulDB): GCVE-100-110189
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 12/04/2017 21:15
Updated: 07/13/2025 00:44
Changes: 12/04/2017 21:15 (64), 12/12/2019 08:36 (3), 07/13/2025 00:44 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.