MITRE Caldera contributor report:
In MITRE Caldera through 4.2.0 and 5.0.0 before 35bc06e,
a Remote Code Execution (RCE) vulnerability was found in the dynamic
agent (implant) compilation functionality of the server. This allows
remote attackers to execute arbitrary code on the server that Caldera
is running on via a crafted web request to the Caldera server API used
for compiling and downloading of Caldera's Sandcat or Manx agent
(implants). This web request can use the gcc -extldflags linker flag
with sub-commands.