CVE-2021-34561 Security feature bypass in WHA-GW-F2D2-0-AS- Z2-ETH
Attackers can bypass IP or firewall access restrictions on the WirelessHART Gateway using DNS rebinding to proxy requests through the victim's browser.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-34561?
CVE-2021-34561 is a high-severity vulnerability in Phoenix Contact WHA-GW-F2D2-0-AS- Z2-ETH, published on 31 Aug 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
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.
Weakness: CWE-350
Which versions are affected by CVE-2021-34561?
It affects 2 products.
Products include Pepperl-Fuchs Wha-Gw-F2d2-0-as-Z2-Eth.eip Firmware, Pepperl-Fuchs Wha-Gw-F2d2-0-as-Z2-Eth Firmware.
How do I fix CVE-2021-34561?
No fix has been published for CVE-2021-34561 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-34561 being exploited?
There is no known exploitation of CVE-2021-34561 in the wild and no public exploit code.
Other vulnerabilities in Phoenix Contact WHA-GW-F2D2-0-AS- Z2-ETH
- CVE-2021-34565 In WirelessHART-Gateway versions 3.0.7 to 3.0.9 hard-coded credentials have been found
- CVE-2021-34560 A vulnerability in WirelessHART-Gateway <= 3.0.9 could lead to information exposure of sensitive information
- CVE-2021-34559 Other in WHA-GW-F2D2-0-AS- Z2-ETH
- CVE-2021-34562 Cross-site scripting in WHA-GW-F2D2-0-AS- Z2-ETH
- CVE-2021-34563 Security feature bypass in WHA-GW-F2D2-0-AS- Z2-ETH
Sources
Also known as GHSA-9fh3-r25p-cgrm.