Bugzilla – Full Text Bug Listing
| Summary: | [CVS EXTSSH] extssh not working with sshd 1.5.1.2.27 | ||
|---|---|---|---|
| Product: | [Eclipse Project] Platform | Reporter: | Hendrik Hoefer <hho> |
| Component: | Team | Assignee: | Boris Shingarov <bshingar> |
| Status: | RESOLVED DUPLICATE | QA Contact: | |
| Severity: | normal | ||
| Priority: | P3 | Keywords: | helpwanted |
| Version: | 2.0.2 | ||
| Target Milestone: | 2.1 M3 | ||
| Hardware: | Sun | ||
| OS: | Solaris | ||
| Whiteboard: | |||
It is strange that this problem occurs for this configuration. There haven't been any other similar problems reported for EXTSSH. Perhaps the problem is related to the debug messages patch that was applied to the ssh plugin. A workaround is to use the ext connection method and an external ssh tool. Without the debug message patch we get a different error in the same method. The problem is, that the number of byte the method wants to read is too big. I do not have the environment available, therefore I don't know the exact error message. If there is anything I can do to further debug the problem, let me know. Regards Hendrik This could be due to the size of the server's public key. I seem to recall an old bug that mentioned a problem with keys bigger than 768 bits. How big is your server's key? I believe that I have found and fixed the bug. The fix will be in tomorrow's (Oct 8) integration build. Would you mind testing that build to see if the problem is indeed fixed? I will try it today and let you know. The server key is 768 Bits. I couldn't download N20021008 because of some build problems. I took whatever is available from http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.team.cvs.ssh/src/org/eclipse/team/internal/ccvs/ssh/?diff_format=H and rebuilt the jar. I looks like we're getting further. Please see the stacktrace below. Thanks for your help Hendrik Line 456 reads Misc.random(block, offset, block.length - data.length - 3, false); offset += block.length - data.length - 3; ==>Line 456 block[offset++] = 0; java.lang.ArrayIndexOutOfBoundsException at org.eclipse.team.internal.ccvs.ssh.Misc.encryptRSAPkcs1(Misc.java:456) at org.eclipse.team.internal.ccvs.ssh.Client.send_SSH_CMSG_SESSION_KEY(Client.java:761) at org.eclipse.team.internal.ccvs.ssh.Client.receive_SSH_SMSG_PUBLIC_KEY(Client.java:617) at org.eclipse.team.internal.ccvs.ssh.Client.login(Client.java:533) at org.eclipse.team.internal.ccvs.ssh.Client.connect(Client.java:449) at org.eclipse.team.internal.ccvs.ssh.SSHServerConnection.open(SSHServerConnection.java:76) at org.eclipse.team.internal.ccvs.core.connection.Connection.open(Connection.java:123) at org.eclipse.team.internal.ccvs.core.connection.CVSRepositoryLocation.createConnection(CVSRepositoryLocation.java:139) at org.eclipse.team.internal.ccvs.core.connection.CVSRepositoryLocation.openConnection(CVSRepositoryLocation.java:322) at org.eclipse.team.internal.ccvs.core.client.Session.open(Session.java:294) at org.eclipse.team.internal.ccvs.core.client.Session.run(Session.java:187) at org.eclipse.team.internal.ccvs.core.connection.CVSRepositoryLocation.validateConnection(CVSRepositoryLocation.java:443) at The problem is not the server key length. 768 is the standard length and it works fine on several of our test servers. There must be some other variable in the ssh configuration that is surfcing the bug. As for the above traceback, the line number of the exception does not match up to the source code I have. Could you rerun the test on the latest integration build I20021008? sorry for beeing a bit late. This is the stack we got with build 200210081304
-
Hendrik
java.lang.ArrayIndexOutOfBoundsException
at
org.eclipse.team.internal.ccvs.ssh.Misc.encryptRSAPkcs1(Misc.java:437)
at
org.eclipse.team.internal.ccvs.ssh.Client.send_SSH_CMSG_SESSION_KEY(Client.java:655)
at
org.eclipse.team.internal.ccvs.ssh.Client.receive_SSH_SMSG_PUBLIC_KEY(Client.java:569)
at org.eclipse.team.internal.ccvs.ssh.Client.login(Client.java:486)
at
org.eclipse.team.internal.ccvs.ssh.Client.connect(Client.java:404)
at
org.eclipse.team.internal.ccvs.ssh.SSHServerConnection.open(SSHServerConnection.java:76)
at
org.eclipse.team.internal.ccvs.core.connection.Connection.open(Connection.java:123)
at
org.eclipse.team.internal.ccvs.core.connection.CVSRepositoryLocation.createConnection(CVSRepositoryLocation.java:150)
at
org.eclipse.team.internal.ccvs.core.connection.CVSRepositoryLocation.openConnection(CVSRepositoryLocation.java:333)
at
org.eclipse.team.internal.ccvs.core.client.Session.open(Session.java:295)
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We're trying to setup an extssh connection to a Solaris box running sshd 1.5.1.2.27 without success. When using the latest stable release (containing the SSH_MSG_DEBUG fixes) we get a NegativeArraySizeException (see stacktrace) Any hint is welcome. Regards Hendrik These are the values of the variables in Misc.readMpInt(...) is= org.eclipse.team.internal.ccvs.ssh.ServerPacket$PacketInputStream (id=105) a= - 127 b= -124 bits= -32636 bytes= -4078 The method was called from byte[] host_key_public_exponent = Misc.readMpInt(pis); Top of stack: Thread [main] (Suspended (exception java.lang.NegativeArraySizeException)) org.eclipse.team.internal.ccvs.ssh.Misc.readMpInt(java.io.InputStream) line: 314 org.eclipse.team.internal.ccvs.ssh.Client.receive_SSH_SMSG_PUBLIC_KEY(org.eclipse.team.internal.ccvs.ssh.ServerPacket) line: 550 org.eclipse.team.internal.ccvs.ssh.Client.login() line: 481 org.eclipse.team.internal.ccvs.ssh.Client.connect(org.eclipse.core.runtime.IProgressMonitor) line: 399314 This is what putty has to say about the machine: 2002-10-01 15:35:28Looking up host xxxxxxxxxxxx 2002-10-01 15:35:28Connecting to xxxxxxxxx port 22 2002-10-01 15:35:29Server version: SSH-1.5-1.2.27 2002-10-01 15:35:29We claim version: SSH-1.5-PuTTY- Release-0.52 2002-10-01 15:35:29Using SSH protocol version 1 2002-10-01 15:35:29Received public keys 2002-10-01 15:35:29Host key fingerprint is: 2002-10-01 15:35:29 1024 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 2002-10-01 15:35:30Encrypted session key 2002-10- 01 15:35:30AES not supported in SSH1, skipping 2002-10-01 15:35:30Using Blowfish encryption 2002-10-01 15:35:30Trying to enable encryption... 2002-10-01 15:35:30Initialised Blowfish encryption 2002-10-01 15:35:31Installing CRC compensation attack detector 2002-10-01 15:35:31Successfully started encryption 2002-10-01 15:35:34Sent username "xxxxx" 2002-10-01 15:35:37Sending password with camouflage packets 2002-10-01 15:35:37Sent password 2002-10-01 15:35:37Authentication successful 2002-10-01 15:35:37Allocated pty 2002-10-01 15:35:37Started session