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CVE-2021-34561— A vulnerability in WirelessHART-Gateway <= 3.0.8 allows to bypass any IP or firewall based access restrictions through DNS rebinding

Quick assessment

Affected
Phoenix Contact WHA-GW-F2D2-0-AS- Z2-ETH
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Pepperl Fuchs WirelessHART-Gateway是德国Pepperl Fuchs公司的一款网关设备。 Pepperl Fuchs WirelessHART-Gateway 3.0.8及之前版本存在安全漏洞，攻击者可利用该漏洞使用DNS重新绑定绕过可能存在的任何基于IP或防火墙的访问限制

CVSS 7.5 · High EPSS 0.87% · P57
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I. Basic Information for CVE-2021-34561

Vulnerability Information
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Vulnerability Title
A vulnerability in WirelessHART-Gateway <= 3.0.8 allows to bypass any IP or firewall based access restrictions through DNS rebinding
Source: CVE Program / CVE List V5
Vulnerability Description
In PEPPERL+FUCHS WirelessHART-Gateway <= 3.0.8 serious issue exists, if the application is not externally accessible or uses IP-based access restrictions. Attackers can use DNS Rebinding to bypass any IP or firewall based access restrictions that may be in place, by proxying through their target's browser.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不恰当地信任反向DNS
Source: CVE Program / CVE List V5
Vulnerability Title
Pepperl Fuchs WirelessHART-Gateway安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Pepperl Fuchs WirelessHART-Gateway是德国Pepperl Fuchs公司的一款网关设备。 Pepperl Fuchs WirelessHART-Gateway 3.0.8及之前版本存在安全漏洞，攻击者可利用该漏洞使用DNS重新绑定绕过可能存在的任何基于IP或防火墙的访问限制
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Phoenix Contact WHA-GW-F2D2-0-AS- Z2-ETH 3.0.8 ~ 3.0.8 -
Phoenix Contact WHA-GW-F2D2-0-AS- Z2-ETH.EIP 3.0.8 ~ 3.0.8 -

II. Public POCs for CVE-2021-34561

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III. Intelligence Information for CVE-2021-34561

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Other References for CVE-2021-34561 (1)

Same Patch Batch · Phoenix Contact · 2021-08-31 · 8 CVEs total

CVE-2021-34565 9.8 CRITICAL In WirelessHART-Gateway versions 3.0.7 to 3.0.9 hard-coded credentials have been found
CVE-2021-33555 7.5 HIGH A vulnerability may allow remote attackers to read arbitrary files on the server of the Wi
CVE-2021-34564 5.5 MEDIUM In WirelessHART-Gateway versions 3.0.9 a vulnerability allows to read and write sensitive
CVE-2021-34560 5.5 MEDIUM A vulnerability in WirelessHART-Gateway <= 3.0.9 could lead to information exposure of sen
CVE-2021-34562 5.4 MEDIUM A vulnerability in WirelessHART-Gateway 3.0.8 it is possible to inject arbitrary JavaScrip
CVE-2021-34559 5.4 MEDIUM A vulnerability in WirelessHART-Gateway <= 3.0.8 may allow remote attackers to rewrite lin
CVE-2021-34563 3.3 LOW In WirelessHART-Gateway versions 3.0.8 and 3.0.9 the HttpOnly flag is missing in a cookie

IV. Related Vulnerabilities

Same product: WHA-GW-F2D2-0-AS- Z2-ETH
Same vendor: Phoenix Contact
Same weakness: CWE-350

V. Comments for CVE-2021-34561

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