[JENKINS-56031] SSH plugin fails intermittently because of issue with JSch

Type: Bug
Resolution: Unresolved
Priority: Minor
Component/s: jsch-plugin, ssh-plugin
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This is similar to an earlier bug https://issues.jenkins-ci.org/browse/JENKINS-24402?jql=text%20~%20%22jsch%22

Same problem has resurfaced in the later releases of JSch, because of that we get failed builds intermittently with the below error.

JSch has included a fix for this problem in the latest version , v0.1.55.

Upgrading Jenkins SSH plugin to this version should fix this problem.

These discussion forums provide the context

discussion about the issues in JSch and fix https://sourceforge.net/p/jsch/bugs/111/

discussion about previous fix in Jenkins SSH plugin and further recurrences https://stackoverflow.com/questions/12279836/ssh-using-jschexception-verify-false-sometimes-fails

Stacktrace:

[SSH] executing...
[SSH] Exception:Session.connect: java.security.SignatureException: Invalid encoding for signature
com.jcraft.jsch.JSchException: Session.connect: java.security.SignatureException: Invalid encoding for signature
at com.jcraft.jsch.Session.connect(Session.java:565)
at org.jvnet.hudson.plugins.CredentialsSSHSite.createSession(CredentialsSSHSite.java:132)
at org.jvnet.hudson.plugins.CredentialsSSHSite.executeCommand(CredentialsSSHSite.java:208)
at org.jvnet.hudson.plugins.SSHBuilder.perform(SSHBuilder.java:104)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:744)
at hudson.model.Build$BuildExecution.build(Build.java:206)
at hudson.model.Build$BuildExecution.doRun(Build.java:163)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:504)
at hudson.model.Run.execute(Run.java:1798)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:97)
at hudson.model.Executor.run(Executor.java:429)

relates to

JENKINS-69150 jsch plugin prevents Remote SFTP Plugin From Working on MacOS Monterey

Closed

Oleg Nenashev added a comment - 2019-02-12 06:17

CC jvz and jthompson just in case I am missing something

Oleg Nenashev added a comment - 2019-02-12 06:17 CC jvz and jthompson just in case I am missing something

Matt Sicker added a comment - 2019-02-12 16:23

Chances are that the old version of JSch was less restrictive about allowed key parameters and such. Do you have info about the server and client ciphers being used? Key sizes, algorithm choice, that sort of thing.

Matt Sicker added a comment - 2019-02-12 16:23 Chances are that the old version of JSch was less restrictive about allowed key parameters and such. Do you have info about the server and client ciphers being used? Key sizes, algorithm choice, that sort of thing.

Jeff Thompson added a comment - 2019-02-12 18:37

Looks correct to me. The 0.1.55 version is available and looks like it may fix the problem. The ssh-plugin should be updated to use the new dependency version.

Jeff Thompson added a comment - 2019-02-12 18:37 Looks correct to me. The 0.1.55 version is available and looks like it may fix the problem. The ssh-plugin should be updated to use the new dependency version.

Matt Sicker added a comment - 2019-02-13 15:18

But the jsch-plugin is already updated to JSCH 0.1.55. You made the release: https://github.com/jenkinsci/jsch-plugin/releases/tag/jsch-0.1.55

Matt Sicker added a comment - 2019-02-13 15:18 But the jsch-plugin is already updated to JSCH 0.1.55. You made the release: https://github.com/jenkinsci/jsch-plugin/releases/tag/jsch-0.1.55

Jeff Thompson added a comment - 2019-02-13 15:30

jvz, right. I released the jsch-plugin 0.1.55 containing the fix the for this. The ssh-plugin should be updated to reference the new jsch-plugin version. kusumanchi might be able to update the jsch-plugin version and test it out.

Jeff Thompson added a comment - 2019-02-13 15:30 jvz , right. I released the jsch-plugin 0.1.55 containing the fix the for this. The ssh-plugin should be updated to reference the new jsch-plugin version. kusumanchi might be able to update the jsch-plugin version and test it out.

V Kusumanchi added a comment - 2019-02-18 16:42

jthompson, jvz I have updated the pom.xml with the reference to 0.1.55 version of jsch plugin.

Raised a PR for the change, https://github.com/dev-medha-io/ssh-plugin/pull/1

Could anyone merge this? Thanks

V Kusumanchi added a comment - 2019-02-18 16:42 jthompson , jvz I have updated the pom.xml with the reference to 0.1.55 version of jsch plugin. Raised a PR for the change, https://github.com/dev-medha-io/ssh-plugin/pull/1 Could anyone merge this? Thanks

Jeff Thompson added a comment - 2019-02-18 16:49

kusumanchi, I think you want to change your pull request to merge into the master branch on jenkinsci/ssh-plugin. Otherwise, it looks good.

Jeff Thompson added a comment - 2019-02-18 16:49 kusumanchi , I think you want to change your pull request to merge into the master branch on jenkinsci/ssh-plugin. Otherwise, it looks good.

V Kusumanchi added a comment - 2019-02-19 09:41

Thank you jthompson, I created a new PR merging into jenkinsci/ssh-plugin.

kindly have another look https://github.com/jenkinsci/ssh-plugin/pull/18

If you are happy, please merge it.

V Kusumanchi added a comment - 2019-02-19 09:41 Thank you jthompson , I created a new PR merging into jenkinsci/ssh-plugin. kindly have another look https://github.com/jenkinsci/ssh-plugin/pull/18 If you are happy, please merge it.

Claudio Bantaloukas added a comment - 2022-11-29 19:57

Would it be worth considering an update to this fork? https://github.com/mwiede/jsch

Claudio Bantaloukas added a comment - 2022-11-29 19:57 Would it be worth considering an update to this fork? https://github.com/mwiede/jsch

Claudio Bantaloukas added a comment - 2023-03-06 22:56

Please consider this PR that should solve the issue

https://github.com/jenkinsci/jsch-plugin/pull/33

Claudio Bantaloukas added a comment - 2023-03-06 22:56 Please consider this PR that should solve the issue https://github.com/jenkinsci/jsch-plugin/pull/33

Assignee:: V Kusumanchi

Reporter:: V Kusumanchi

Votes:: 0 Vote for this issue

Watchers:: 5 Start watching this issue

Created:: 2019-02-07 17:45

Updated:: 2023-03-06 22:57

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Collapse comment: Oleg Nenashev added a comment - 2019-02-12 06:17

Expand comment: Oleg Nenashev added a comment - 2019-02-12 06:17

Collapse comment: Matt Sicker added a comment - 2019-02-12 16:23

Expand comment: Matt Sicker added a comment - 2019-02-12 16:23

Collapse comment: Jeff Thompson added a comment - 2019-02-12 18:37

Expand comment: Jeff Thompson added a comment - 2019-02-12 18:37

Collapse comment: Matt Sicker added a comment - 2019-02-13 15:18

Expand comment: Matt Sicker added a comment - 2019-02-13 15:18

Collapse comment: Jeff Thompson added a comment - 2019-02-13 15:30

Expand comment: Jeff Thompson added a comment - 2019-02-13 15:30

Collapse comment: V Kusumanchi added a comment - 2019-02-18 16:42

Expand comment: V Kusumanchi added a comment - 2019-02-18 16:42

Collapse comment: Jeff Thompson added a comment - 2019-02-18 16:49

Expand comment: Jeff Thompson added a comment - 2019-02-18 16:49

Collapse comment: V Kusumanchi added a comment - 2019-02-19 09:41

Expand comment: V Kusumanchi added a comment - 2019-02-19 09:41

Collapse comment: Claudio Bantaloukas added a comment - 2022-11-29 19:57

Expand comment: Claudio Bantaloukas added a comment - 2022-11-29 19:57

Collapse comment: Claudio Bantaloukas added a comment - 2023-03-06 22:56

Expand comment: Claudio Bantaloukas added a comment - 2023-03-06 22:56

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