Debian: DSA-3251-1: dnsmasq security update

    Date05 May 2015
    CategoryDebian
    66
    Posted ByLinuxSecurity Advisories
    Nick Sampanis discovered that dnsmasq, a small caching DNS proxy and DHCP/TFTP server, did not properly check the return value of the setup_reply() function called during a TCP connection, which is used then as a size argument in a function which writes data on the client's
    
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    Debian Security Advisory DSA-3251-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    http://www.debian.org/security/                      Salvatore Bonaccorso
    May 05, 2015                           http://www.debian.org/security/faq
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    Package        : dnsmasq
    CVE ID         : CVE-2015-3294
    Debian Bug     : 783459
    
    Nick Sampanis discovered that dnsmasq, a small caching DNS proxy and
    DHCP/TFTP server, did not properly check the return value of the
    setup_reply() function called during a TCP connection, which is used
    then as a size argument in a function which writes data on the client's
    connection. A remote attacker could exploit this issue via a specially
    crafted DNS request to cause dnsmasq to crash, or potentially to obtain
    sensitive information from process memory.
    
    For the oldstable distribution (wheezy), this problem has been fixed
    in version 2.62-3+deb7u2.
    
    For the stable distribution (jessie), this problem has been fixed in
    version 2.72-3+deb8u1.
    
    For the testing distribution (stretch) and the unstable distribution
    (sid), this problem will be fixed soon.
    
    We recommend that you upgrade your dnsmasq 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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