ESB-2018.2536 - [UNIX/Linux][Debian] dropbear: Access confidential data - Remote/unauthenticated 2018-08-28

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2536
                   [DLA 1476-1] dropbear security update
                              28 August 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           dropbear
Publisher:         Debian
Operating System:  Debian GNU/Linux 8
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-15599  

Original Bulletin: 
   https://lists.debian.org/debian-lts-announce/2018/08/msg00026.html

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Debian. It is recommended that administrators 
         running dropbear check for an updated version of the software for 
         their operating system.

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Package        : dropbear
Version        : 2014.65-1+deb8u3
CVE ID         : CVE-2018-15599
Debian Bug     : 906890

A vulnerability in dropbear, a lightweight SSH2 server and client, making it
possible to guess valid usernames has been found:

CVE-2018-15599:

    The recv_msg_userauth_request function in svr-auth.c in is prone
    to a user enumeration vulnerability, similar to CVE-2018-15473 in OpenSSH.

For Debian 8 "Jessie", this problem has been fixed in version
2014.65-1+deb8u3.

We recommend that you upgrade your dropbear packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

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