[
https://issues.apache.org/jira/browse/SSHD-699?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Johan Östling updated SSHD-699:
-------------------------------
Description:
Trying to establish the length of a message with only a header byte will cause
a buffer underflow exception. I noticed it on SSH_MSG_IGNORE, but it is
probably general to all messages.
Reproducible with unit test:
{code:title=AbstractSessionTest.java|borderStyle=solid}
@Test
public void testZeroLengthIgnoreMessage() throws Exception {
Buffer msg = session.createBuffer(SshConstants.SSH_MSG_IGNORE,
Byte.SIZE);
session.handleIgnore(msg);
}
{code}
This is a regression since 0.14.0, which did not have this problem.
was:
Trying to establish the length of a message with only a header byte will cause
a buffer underflow exception. I noticed it on SSH_MSG_IGNORE, but it is
probably general to all messages.
Reproducible with unit test: (in AbstractSessionTest)
```
@Test
public void testZeroLengthIgnoreMessage() throws Exception {
Buffer msg = session.createBuffer(SshConstants.SSH_MSG_IGNORE,
Byte.SIZE);
session.handleIgnore(msg);
}
```
This is a regression since 0.14.0, which did not have this problem.
> Server receiving 0-length SSH_MSG_IGNORE causes Buffer Underflow exception
> --------------------------------------------------------------------------
>
> Key: SSHD-699
> URL: https://issues.apache.org/jira/browse/SSHD-699
> Project: MINA SSHD
> Issue Type: Bug
> Affects Versions: 1.2.0
> Reporter: Johan Östling
>
> Trying to establish the length of a message with only a header byte will
> cause a buffer underflow exception. I noticed it on SSH_MSG_IGNORE, but it is
> probably general to all messages.
> Reproducible with unit test:
> {code:title=AbstractSessionTest.java|borderStyle=solid}
> @Test
> public void testZeroLengthIgnoreMessage() throws Exception {
> Buffer msg = session.createBuffer(SshConstants.SSH_MSG_IGNORE,
> Byte.SIZE);
> session.handleIgnore(msg);
> }
> {code}
> This is a regression since 0.14.0, which did not have this problem.
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