https://bugzilla.mindrot.org/show_bug.cgi?id=2846
Bug ID: 2846
Summary: PermitOpen rule in sshd_config is not case insensitive
Product: Portable OpenSSH
Version: 7.6p1
Hardware: Other
OS: Linux
Status: NEW
Severity: major
Priority: P5
Component: sshd
Assignee: [email protected]
Reporter: [email protected]
The PermitOpen rule in sshd_config holds a list of TCP endpoints and
port number tuples delimited by a space character. The endpoint can be
specified as IP address or FQDN. FQDN are case insensitive, but sshd
performs a case sensitiv check.
The sshd configuration in sshd_config:
PermitOpen=gitlab.company.de:80 lynq.company.de:3121
Here is the ssh client call:
ssh -L 3121:Lynq.company.de:3121 remote.company.de
Solution:
Perform a case insensitive check.
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