Skip to content

telnet: refuse IAC codes in content#18657

Closed
bagder wants to merge 2 commits into
masterfrom
bagder/bad-iac-telnet
Closed

telnet: refuse IAC codes in content#18657
bagder wants to merge 2 commits into
masterfrom
bagder/bad-iac-telnet

Conversation

@bagder
Copy link
Copy Markdown
Member

@bagder bagder commented Sep 21, 2025

Ban the use of IAC (0xff) in telnet options set by the application. They need to be escaped when sent but I can't see any valid reason for an application to send them.

Of course, an application sending such data basically ask for trouble.

Reported in Joshua's sarif data

Ban the use of IAC (0xff) in telnet options set by the application. They
need to be escaped when sent but I can't see any valid reason for an
application to send them.

Of course, an application sending such data basically ask for trouble.

Reported in Joshua's sarif data
@bagder bagder marked this pull request as ready for review September 21, 2025 09:16
@bagder bagder closed this in a72e155 Sep 21, 2025
@bagder bagder deleted the bagder/bad-iac-telnet branch September 21, 2025 21:00
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

None yet

Development

Successfully merging this pull request may close these issues.

1 participant