Debian: DSA-3854-1: bind9 security update

    Date14 May 2017
    CategoryDebian
    56
    Posted ByLinuxSecurity Advisories
    Several vulnerabilities were discovered in BIND, a DNS server implementation. The Common Vulnerabilities and Exposures project identifies the following problems:
    
    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-3854-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                     Salvatore Bonaccorso
    May 14, 2017                          https://www.debian.org/security/faq
    - -------------------------------------------------------------------------
    
    Package        : bind9
    CVE ID         : CVE-2017-3136 CVE-2017-3137 CVE-2017-3138
    Debian Bug     : 860224 860225 860226
    
    Several vulnerabilities were discovered in BIND, a DNS server
    implementation. The Common Vulnerabilities and Exposures project
    identifies the following problems:
    
    CVE-2017-3136
    
        Oleg Gorokhov of Yandex discovered that BIND does not properly
        handle certain queries when using DNS64 with the "break-dnssec yes;"
        option, allowing a remote attacker to cause a denial-of-service.
    
    CVE-2017-3137
    
        It was discovered that BIND makes incorrect assumptions about the
        ordering of records in the answer section of a response containing
        CNAME or DNAME resource records, leading to situations where BIND
        exits with an assertion failure. An attacker can take advantage of
        this condition to cause a denial-of-service.
    
    CVE-2017-3138
    
        Mike Lalumiere of Dyn, Inc. discovered that BIND can exit with a
        REQUIRE assertion failure if it receives a null command string on
        its control channel. Note that the fix applied in Debian is only
        applied as a hardening measure. Details about the issue can be found
        at https://kb.isc.org/article/AA-01471 .
    
    For the stable distribution (jessie), these problems have been fixed in
    version 1:9.9.5.dfsg-9+deb8u11.
    
    For the unstable distribution (sid), these problems have been fixed in
    version 1:9.10.3.dfsg.P4-12.3.
    
    We recommend that you upgrade your bind9 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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