There is a bug which can lead to dos in live555 (version 2021.04.06) due to access to illegal addresses.

[3vi1d0g]

When i send my POC , the program received signal SIGSEGV(Segmentation fault. )
It's seem to the variable "env" is not initialized.

from pwn import *
p = remote("127.0.0.1", 8554)
context.log_level="DEBUG"

f = open("poc.raw")
lines = f.read()
for line in lines.split("\r\n\r\n"):
	p.send(line+"\r\n\r\n")
print ("Fin!\n")

:: I use the LLVM compiler to compile project.

poc.zip

log.log

[3vi1d0g]

My debugger log is log.log

[kuiba3]

I failed to reproduce the crash in version bbee4ed68a27056671875b845f84d90a01328788 2020.6.10.
I can't find version 2021.04.06.
Can you provide the download link of version 2021.04.06.