VDB-186705 · CVE-2021-43549 · icsa-21-313-06

OSIsoft PI Web API up to 2019 SP1 Web Page Generation 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.
2.3	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in OSIsoft PI Web API up to 2019 SP1. This affects an unknown part of the component Web Page Generation Handler. Performing a manipulation results in cross site scripting. This vulnerability is known as CVE-2021-43549. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in OSIsoft PI Web API up to 2019 SP1 (Automation Software). This affects an unknown functionality of the component Web Page Generation Handler. The manipulation with an unknown input leads to a cross site scripting 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.

The weakness was published 11/17/2021 as icsa-21-313-06. The advisory is shared at us-cert.cisa.gov. This vulnerability is uniquely identified as CVE-2021-43549. 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.

Upgrading to version 2021 eliminates this vulnerability. The upgrade is hosted for download at customers.osisoft.com.

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

Productinfo

Type

Automation Software

Vendor

OSIsoft

Name

PI Web API

Version

2019 SP1

License

commercial

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.4
VulDB Meta Temp Score: 2.3

VulDB Base Score: 2.4
VulDB Temp Score: 2.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

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: 🔍

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PI Web API 2021

Timelineinfo

11/08/2021 🔍
11/17/2021 +9 days 🔍
11/17/2021 +0 days 🔍
11/19/2021 +2 days 🔍

Sourcesinfo

Advisory: icsa-21-313-06
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-43549 (🔍)
GCVE (CVE): GCVE-0-2021-43549
GCVE (VulDB): GCVE-100-186705

Entryinfo

Created: 11/17/2021 14:56
Updated: 11/19/2021 09:38
Changes: 11/17/2021 14:56 (42), 11/19/2021 09:38 (1)
Complete: 🔍
Cache ID: 216::103