ESB-2017.2679 - [Win][UNIX/Linux][Ubuntu] curl: Execute arbitrary code/commands - Remote/unauthenticated 2017-10-24

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2679
                            curl vulnerability
                              24 October 2017

===========================================================================

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

Product:           curl
Publisher:         Ubuntu
Operating System:  Ubuntu
                   UNIX variants (UNIX, Linux, OSX)
                   Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-1000257  

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3457-1

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

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USN-3457-1: curl vulnerability
Ubuntu Security Notice USN-3457-1

23rd October, 2017
curl vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

    Ubuntu 17.10
    Ubuntu 17.04
    Ubuntu 16.04 LTS
    Ubuntu 14.04 LTS

Summary

curl could be made to crash or run programs if it received specially crafted network traffic.
Software description

    curl - HTTP, HTTPS, and FTP client and client libraries

Details

Brian Carpenter discovered that curl incorrectly handled IMAP FETCH
response lines. A remote attacker could use this issue to cause curl to
crash, resulting in a denial of service, or possibly execute arbitrary
code.
Update instructions

The problem can be corrected by updating your system to the following package version:

Ubuntu 17.10:
    libcurl3-nss 7.55.1-1ubuntu2.1 
    curl 7.55.1-1ubuntu2.1 
    libcurl3-gnutls 7.55.1-1ubuntu2.1 
    libcurl3 7.55.1-1ubuntu2.1 
Ubuntu 17.04:
    libcurl3-nss 7.52.1-4ubuntu1.3 
    curl 7.52.1-4ubuntu1.3 
    libcurl3-gnutls 7.52.1-4ubuntu1.3 
    libcurl3 7.52.1-4ubuntu1.3 
Ubuntu 16.04 LTS:
    libcurl3-nss 7.47.0-1ubuntu2.4 
    curl 7.47.0-1ubuntu2.4 
    libcurl3-gnutls 7.47.0-1ubuntu2.4 
    libcurl3 7.47.0-1ubuntu2.4 
Ubuntu 14.04 LTS:
    libcurl3-nss 7.35.0-1ubuntu2.12 
    curl 7.35.0-1ubuntu2.12 
    libcurl3-gnutls 7.35.0-1ubuntu2.12 
    libcurl3 7.35.0-1ubuntu2.12 

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.
References

CVE-2017-1000257

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