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    Debian: DSA-3889-1: libffi security update

    Date 19 Jun 2017
    125
    Posted By LinuxSecurity Advisories
    libffi, a library used to call code written in one language from code written in a different language, was enforcing an executable stack on the i386 architecture. While this might not be considered a vulnerability by itself, this could be leveraged when exploiting other vulnerabilities, like for example
    
    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-3889-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                        Yves-Alexis Perez
    June 19, 2017                         https://www.debian.org/security/faq
    - -------------------------------------------------------------------------
    
    Package        : libffi
    CVE ID         : CVE-2017-1000376
    Debian Bug     : 751907
    
    libffi, a library used to call code written in one language from code written
    in a different language, was enforcing an executable stack on the i386
    architecture. While this might not be considered a vulnerability by itself,
    this could be leveraged when exploiting other vulnerabilities, like for example
    the "stack clash" class of vulnerabilities discovered by Qualys Research Labs.
    For the full details, please refer to their advisory published at:
    https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt
    
    For the oldstable distribution (jessie), this problem has been fixed
    in version 3.1-2+deb8u1.
    
    For the stable distribution (stretch), this problem has been fixed in
    version 3.2.1-4.
    
    For the testing distribution (buster), this problem has been fixed
    in version 3.2.1-4.
    
    For the unstable distribution (sid), this problem has been fixed in
    version 3.2.1-4.
    
    We recommend that you upgrade your libffi packages.
    
    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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