Debian: DSA-4377-1: rssh security update

    Date30 Jan 2019
    CategoryDebian
    1830
    Posted ByAnthony Pell
    The ESnet security team discovered a vulnerability in rssh, a restricted shell that allows users to perform only scp, sftp, cvs, svnserve (Subversion), rdist and/or rsync operations. Missing validation in the scp support could result in the bypass of this restriction, allowing the
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    Debian Security Advisory DSA-4377-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                       Moritz Muehlenhoff
    January 30, 2019                      https://www.debian.org/security/faq
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    Package        : rssh
    CVE ID         : CVE-2019-1000018
    Debian Bug     : 919623
    
    The ESnet security team discovered a vulnerability in rssh, a restricted
    shell that allows users to perform only scp, sftp, cvs, svnserve
    (Subversion), rdist and/or rsync operations. Missing validation in the
    scp support could result in the bypass of this restriction, allowing the
    execution of arbitrary shell commands.
    
    Please note that with the update applied, the "-3" option of scp can no
    longer be used.
    
    For the stable distribution (stretch), this problem has been fixed in
    version 2.3.4-5+deb9u1.
    
    We recommend that you upgrade your rssh packages.
    
    For the detailed security status of rssh please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/rssh
    
    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://www.debian.org/security/
    
    Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.
    
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