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[Bug 3379] New: Config parser only allows SetEnv once
https://bugzilla.mindrot.org/show_bug.cgi?id=3379

Bug ID: 3379
Summary: Config parser only allows SetEnv once
Product: Portable OpenSSH
Version: 8.8p1
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P5
Component: ssh
Assignee: unassigned-bugs@mindrot.org
Reporter: bugzilla@streibelt.net

When using SetEnv in the .ssh/config it can only be used once.

Every additional entry will be ignored.

looking at readconf.c:1758 I see that options->num_setenv is being
checked to be != 0 and then continuing.

This leads to these configurations NOT to work as intended:

SetEnv TZ=UTC
SetEnv TERM=xterm

Here only TZ will be set.

Also when SetEnv is being used globally, it cannot be used later inside
a Host definition to specify additional variables or change them.

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