CVE-2021-33555 A vulnerability may allow remote attackers to read arbitrary files on the server of the WirelessHART-Gateway
Unauthenticated attackers can read arbitrary files on the server via a path traversal vulnerability in the filename parameter.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-33555?
CVE-2021-33555 is a high-severity path traversal 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, with no action from the victim.
Official description
In PEPPERL+FUCHS WirelessHART-Gateway <= 3.0.7 the filename parameter is vulnerable to unauthenticated path traversal attacks, enabling read access to arbitrary files on the server.
Weakness: CWE-22
Which versions are affected by CVE-2021-33555?
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-2021-33555?
No fix has been published for CVE-2021-33555 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2021-33555 being exploited?
There is no known exploitation of CVE-2021-33555 in the wild and no public exploit code.
Other vulnerabilities in Phoenix Contact WHA-GW-F2D2-0-AS- Z2-ETH
Sources
Also known as GHSA-xc2w-5wwx-wg78.