CVE-2021-21801
published 2021-07-16CVE-2021-21801: This vulnerability is present in device_graph_page.php script, which is a part of the Advantech R-SeeNet web applications. A specially crafted URL by an…
PriorityP180medium6.1CVSS 3.1
AVNACLPRNUIRSCCLILAN
ITWEXPLOITVulnCheck KEV
Exploited in the wild
EPSS
63.41%
99.1th percentile
This vulnerability is present in device_graph_page.php script, which is a part of the Advantech R-SeeNet web applications. A specially crafted URL by an attacker and visited by a victim can lead to arbitrary JavaScript code execution.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| advantech | r-seenet | — | — |
Detection & IOCsextracted from sources · hover to see the quote
- →Detect CVE-2021-21801 XSS probe: HTTP GET request to /php/device_graph_page.php with the 'graph' parameter containing the canary payload '%22zlo%20onerror=alert(1)%20%22'; response body should contain both '"zlo onerror=alert(1) "' and 'Device Status Graph' with a 200 status and text/html content-type. ↗
- →The vulnerable parameter for CVE-2021-21801 is 'graph' in device_graph_page.php. Monitor HTTP requests to this script for unsanitized input reflected in the response body. ↗
- →Use Shodan query 'http.html:"r-seenet"' or FOFA query 'body="r-seenet"' to identify exposed Advantech R-SeeNet instances potentially vulnerable to CVE-2021-21801. ↗
- ·CVE-2021-21801 affects Advantech R-SeeNet version 2.4.12 specifically. Verify the target version before concluding exploitability. ↗
- ·Exploitation requires user interaction (UI:R): a victim must visit the specially crafted URL for the XSS payload to execute. This is a reflected XSS, not stored. ↗
CVSS provenance
nvdv3.16.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
nvdv3.09.6CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N
vulncheck6.1MEDIUM
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GHSA
GHSA-v3m2-qvx7-g2wh: This vulnerability is present in device_graph_page
ghsa_unreviewed·2022-05-24
CVE-2021-21801 [MEDIUM] CWE-79 GHSA-v3m2-qvx7-g2wh: This vulnerability is present in device_graph_page
This vulnerability is present in device_graph_page.php script, which is a part of the Advantech R-SeeNet web applications. A specially crafted URL by an attacker and visited by a victim can lead to arbitrary JavaScript code execution.
VulnCheck
advantech r-seenet Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
vulncheck·2021·CVSS 6.1
CVE-2021-21801 [MEDIUM] advantech r-seenet Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
advantech r-seenet Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
This vulnerability is present in device_graph_page.php script, which is a part of the Advantech R-SeeNet web applications. A specially crafted URL by an attacker and visited by a victim can lead to arbitrary JavaScript code execution.
Affected: advantech r-seenet
Required Action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Exploitation References: https://www.f5.com/labs/articles/threat-intelligence/sensor-intel-series-top-cves-august-2024; https://www.f5.com/labs/articles/threat-intelligence/botpoke-scanner-switches-ip; https://www.f5.com/labs/articles/threat-intelligence/continued-scannin
No detection rules found.
Nuclei
Advantech R-SeeNet - Cross-Site Scripting
nuclei·CVSS 6.1
CVE-2021-21801 [MEDIUM] Advantech R-SeeNet - Cross-Site Scripting
Advantech R-SeeNet - Cross-Site Scripting
Advantech R-SeeNet contains a cross-site scripting vulnerability in the device_graph_page.php script via the graph parameter. A specially crafted URL by an attacker can lead to arbitrary JavaScript code execution.
Template:
id: CVE-2021-21801
info:
name: Advantech R-SeeNet - Cross-Site Scripting
author: gy741
severity: medium
description: Advantech R-SeeNet contains a cross-site scripting vulnerability in the device_graph_page.php script via the graph parameter. A specially crafted URL by an attacker can lead to arbitrary JavaScript code execution.
impact: |
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary JavaScript code in the context of the victim's browser, leading to session hijacking, defacement,
Nuclei
Advantech R-SeeNet - Cross-Site Scripting
nuclei·CVSS 6.1
CVE-2021-21802 [MEDIUM] Advantech R-SeeNet - Cross-Site Scripting
Advantech R-SeeNet - Cross-Site Scripting
Advantech R-SeeNet contains a cross-site scripting vulnerability in the device_graph_page.php script via the device_id parameter. A specially crafted URL by an attacker can lead to arbitrary JavaScript code execution.
Template:
id: CVE-2021-21802
info:
name: Advantech R-SeeNet - Cross-Site Scripting
author: gy741
severity: medium
description: Advantech R-SeeNet contains a cross-site scripting vulnerability in the device_graph_page.php script via the device_id parameter. A specially crafted URL by an attacker can lead to arbitrary JavaScript code execution.
impact: |
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary JavaScript code in the context of the victim's browser, leading to session hijacking, defa
Talos
Vulnerability Spotlight: Multiple vulnerabilities in Advantech R-SeeNet
blogs_talos·2021-07-15·CVSS 6.1
[MEDIUM] Vulnerability Spotlight: Multiple vulnerabilities in Advantech R-SeeNet
The Talos vulnerability research team discovered these vulnerabilities. Blog by Jon Munshaw.
Cisco Talos recently discovered multiple vulnerabilities in the Advantech R-SeeNet monitoring software.
R-SeeNet is the software system used for monitoring Advantech routers. It continuously collects information from individual routers in the network and records the data into a SQL database. The vulnerabilities Talos discovered exist in various scripts inside of R-SeeNet's web applications.
TALOS-2021-1270 (CVE-2021-21799), TALOS-2021-1271 (CVE-2021-21800) and TALOS-2021-1272 (CVE-2021-21801 - CVE-2021-21803) are all vulnerabilities that could allow an attacker to execute arbitrary JavaScript code in the context of the targeted user's browser. An adversary could exploit any of these vulnerabilit
Talos
Vulnerability Spotlight: Multiple vulnerabilities in Advantech R-SeeNet
blogs_talos·2021-07-15·CVSS 6.1
[MEDIUM] Vulnerability Spotlight: Multiple vulnerabilities in Advantech R-SeeNet
## Vulnerability Spotlight: Multiple vulnerabilities in Advantech R-SeeNet
The Talos vulnerability research team discovered these vulnerabilities. Blog by Jon Munshaw.
Cisco Talos recently discovered multiple vulnerabilities in the Advantech R-SeeNet monitoring software.
R-SeeNet is the software system used for monitoring Advantech routers. It continuously collects information from individual routers in the network and records the data into a SQL database. The vulnerabilities Talos discovered exist in various scripts inside of R-SeeNet's web applications.
TALOS-2021-1270 (CVE-2021-21799), TALOS-2021-1271 (CVE-2021-21800) and TALOS-2021-1272 (CVE-2021-21801 - CVE-2021-21803) are all vulnerabilities that could allow an attacker to execute arbitrary JavaScript code in the context of the t
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2021-07-16
Published
Exploited in the wild