Public bug reported:
When sshd_config contains a comment of more than 1023 chars, it treats
char 1024+ as valid configuration. That usually breaks the config, or
(in case there accidentally is valid sshd_config syntax) is unwanted.
To verify the bug, apply appended patch to sshd_config (that prepends a
long comment) and try to start ssh. You will see this:
$ sudo /usr/sbin/sshd
/etc/ssh/sshd_config: line 2: Bad configuration option: ThisIsAnInvalidOption
/etc/ssh/sshd_config: terminating, 1 bad configuration options
Note that it complains about line 2 though the offending comment is in
line 1.
It is worth mentioning that active configuration lines longer than 1023
chars work fine. (I discovered this bug when i commented out a long
"Match Address" list)
This bug strikes at on
* openssh-server 1:5.3p1-3ubuntu7 (Ubuntu 10.04 LTS)
* openssh-server 1:5.8p1-7ubuntu1 (Ubuntu 11.10)
* openssh-server 1:5.9p1-5ubuntu1 (Ubuntu 12.04 LTS)
** Affects: openssh (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1023360
Title:
Comments longer than 1024 chars break sshd_config
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