Susmit Sarkar created SSHD-1203:
-----------------------------------
Summary: [[ssh-dss]] none of the keys appears in supported list
Key: SSHD-1203
URL: https://issues.apache.org/jira/browse/SSHD-1203
Project: MINA SSHD
Issue Type: Bug
Affects Versions: 2.7.0
Reporter: Susmit Sarkar
Fix For: 2.7.0
Getting the below exception trace:
30 Jul 2021 17:03:50,834 [sshd-SshServer[2bcef5ca](port=22091)-nio2-thread-2]
DEBUG ServerSessionImpl -
resolveEmptySignaturesProposal(ServerSessionImpl[null@/127.0.0.1:36117])*[[ssh-dss]]
none of the keys appears in supported list:
[[email protected],
[email protected],
[email protected], [email protected],
[email protected], ecdsa-sha2-nistp256, ecdsa-sha2-nistp384,
ecdsa-sha2-nistp521, [email protected], rsa-sha2-512,
rsa-sha2-256, ssh-rsa]*30 Jul 2021 17:03:50,834
[sshd-SshServer[2bcef5ca](port=22091)-nio2-thread-2] DEBUG ServerSessionImpl -
resolveEmptySignaturesProposal(ServerSessionImpl[null@/127.0.0.1:36117])[[ssh-dss]]
none of the keys appears in supported list:
[[email protected],
[email protected],
[email protected], [email protected],
[email protected], ecdsa-sha2-nistp256, ecdsa-sha2-nistp384,
ecdsa-sha2-nistp521, [email protected], rsa-sha2-512,
rsa-sha2-256, ssh-rsa]30 Jul 2021 17:03:50,857
[sshd-SshServer[2bcef5ca](port=22091)-nio2-thread-2] DEBUG Nio2Session -
handleReadCycleFailure(Nio2Session[local=/127.0.0.1:22091,
remote=/127.0.0.1:36117]) SshException after 43009671 nanos at read cycle=1:
sendKexInit() no resolved signatures available30 Jul 2021 17:03:50,857
[sshd-SshServer[2bcef5ca](port=22091)-nio2-thread-2] DEBUG Nio2Session -
exceptionCaught(Nio2Session[local=/127.0.0.1:22091, remote=/127.0.0.1:36117])
caught SshException[sendKexInit() no resolved signatures available] - calling
handler30 Jul 2021 17:03:50,857
[sshd-SshServer[2bcef5ca](port=22091)-nio2-thread-2] WARN ServerSessionImpl -
exceptionCaught(ServerSessionImpl[null@/127.0.0.1:36117])[state=Opened]
SshException: sendKexInit() no resolved signatures
availableorg.apache.sshd.common.SshException: sendKexInit() no resolved
signatures available at
org.apache.sshd.common.session.helpers.AbstractSession.sendKexInit(AbstractSession.java:2281)
at
org.apache.sshd.server.session.AbstractServerSession.readIdentification(AbstractServerSession.java:500)
at
org.apache.sshd.common.session.helpers.AbstractSession.messageReceived(AbstractSession.java:383)
at
org.apache.sshd.common.session.helpers.AbstractSessionIoHandler.messageReceived(AbstractSessionIoHandler.java:64)
at
org.apache.sshd.common.io.nio2.Nio2Session.handleReadCycleCompletion(Nio2Session.java:359)
at
org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:336)
at
org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:333)
at
org.apache.sshd.common.io.nio2.Nio2CompletionHandler.lambda$completed$0(Nio2CompletionHandler.java:38)
at
org.apache.sshd.common.io.nio2.Nio2CompletionHandler$$Lambda$913/0000000088B4A540.run(Unknown
Source) at
java.security.AccessController.doPrivileged(AccessController.java:678) at
org.apache.sshd.common.io.nio2.Nio2CompletionHandler.completed(Nio2CompletionHandler.java:37)
at sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:138) at
sun.nio.ch.Invoker$2.run(Invoker.java:230) at
sun.nio.ch.AsynchronousChannelGroupImpl$1.run(AsynchronousChannelGroupImpl.java:124)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1160)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.lang.Thread.run(Thread.java:822)
Post upgrade we are seeing this error, looks like ssh-dss is deprecated in
2.7.0 but was present in 2.5.1. Can you please help to solve this issue, where
should we add dss support from code?
Thanks
Susmit
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