http://bugzilla.mindrot.org/show_bug.cgi?id=950
Summary: terminal settings not restored after Ctrl+C during
password prompt in scp/sftp
Product: Portable OpenSSH
Version: 3.8.1p1
Platform: Other
OS/Version: Linux
Status: NEW
Severity: minor
Priority: P2
Component: scp
AssignedTo: openssh-bugs@mindrot.org
ReportedBy: peak@argo.troja.mff.cuni.cz
It appears there is a race condition between the handler for SIGINT et al. in
scp/sftp and signal handling in readpassphrase(). When I press Ctrl+C during
password prompt, SIGINT kills the parent process (scp/sftp) before the child
process (ssh) exits. This makes the child process orphaned: it loses access to
its controlling terminal, tcsetattr() fails with EIO, and readpassphrase() exits
without restoring the original terminal settings (i.e. ECHO). The problem was
observed on 3.8.1p1 on Linux 2.4.
------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.
Summary: terminal settings not restored after Ctrl+C during
password prompt in scp/sftp
Product: Portable OpenSSH
Version: 3.8.1p1
Platform: Other
OS/Version: Linux
Status: NEW
Severity: minor
Priority: P2
Component: scp
AssignedTo: openssh-bugs@mindrot.org
ReportedBy: peak@argo.troja.mff.cuni.cz
It appears there is a race condition between the handler for SIGINT et al. in
scp/sftp and signal handling in readpassphrase(). When I press Ctrl+C during
password prompt, SIGINT kills the parent process (scp/sftp) before the child
process (ssh) exits. This makes the child process orphaned: it loses access to
its controlling terminal, tcsetattr() fails with EIO, and readpassphrase() exits
without restoring the original terminal settings (i.e. ECHO). The problem was
observed on 3.8.1p1 on Linux 2.4.
------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.