Vulnerability · Published Aug 31, 2021 · Assigned by CERTVDE
CVE-2021-34561A vulnerability in WirelessHART-Gateway <= 3.0.8 allows to bypass any IP or firewall based access restrictions through DNS rebinding
High 7.5
In plain English
A high-severity security flaw in WHA-GW-F2D2-0-AS- Z2-ETH from Phoenix Contact. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.9%top 41.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Phoenix Contact | WHA-GW-F2D2-0-AS- Z2-ETH | 3.0.8 – through 3.0.8 |
| Phoenix Contact | WHA-GW-F2D2-0-AS- Z2-ETH.EIP | 3.0.8 – through 3.0.8 |
Weakness: CWE-350 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
References
- https://cert.vde.com/en-us/advisories/vde-2021-027 x_refsource_CONFIRM