RE: [jira] [Resolved] (SSHD-925) See if SCP vulnerability CVE-2019-6111 applies and mitigate it if so

[Олег Прохоров <pr...@gmail.com>]

On 2019/08/20 12:47:00 "Goldstein Lyor (Jira)" wrote:
>
>      [
https://issues.apache.org/jira/browse/SSHD-925?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
>
> Goldstein Lyor resolved SSHD-925.
> ---------------------------------
>     Resolution: Not A Problem
>
> > See if SCP vulnerability CVE-2019-6111 applies and mitigate it if so
> > --------------------------------------------------------------------
> >
> >                 Key: SSHD-925
> >                 URL: https://issues.apache.org/jira/browse/SSHD-925
> >             Project: MINA SSHD
> >          Issue Type: Improvement
> >    Affects Versions: 2.2.0
> >            Reporter: Goldstein Lyor
> >            Assignee: Goldstein Lyor
> >            Priority: Major
> >              Labels: scp, security-issue
> >
> > From [OpenSSH version 8.0 release notes|
https://www.openssh.com/txt/release-8.0]
> > {quote}
> > This release contains mitigation for a weakness in the scp(1) tool and
protocol (CVE-2019-6111): when copying files from a remote system to a
local directory, scp(1) did not verify that the filenames that the server
sent matched those requested by the client. This could allow a hostile
server to create or clobber unexpected local files with attacker-controlled
content.
> > {quote}
> > If indeed this vulnerability exists then also note the following
> > {quote}
> > The scp protocol relies on the remote shell for wildcard expansion, so
there is no infallible way for the client's wildcard matching to perfectly
reflect the server's. If there is a difference between client and server
wildcard expansion, the client may refuse files from the server. For this
reason, we have provided a new "-T" flag to scp that disables these
client-side checks at the risk of reintroducing the attack described above.
> > {quote}
>
>
>
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