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  • [SECURITY] [DSA 2276-1] asterisk security update

    From Luciano Bello@1:229/2 to All on Sun Jul 10 17:40:02 2011
    From: [email protected]

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    - ------------------------------------------------------------------------- Debian Security Advisory DSA-2276-1 [email protected] http://www.debian.org/security/ Luciano Bello
    July 10, 2011 http://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package : asterisk
    Vulnerability : multiple denial of service
    Problem type : remote
    Debian-specific: no
    CVE ID : CVE-2011-2529 CVE-2011-2535
    Debian Bug : 631445 631446 631448

    Paul Belanger reported a vulnerability in Asterisk identified as AST-2011-008 (CVE-2011-2529) through which an unauthenticated attacker may crash an Asterisk server remotely. A package containing a null char causes the SIP header parser to alter unrelated memory structures.

    Jared Mauch reported a vulnerability in Asterisk identified as AST-2011-009 through which an unauthenticated attacker may crash an Asterisk server remotely.
    If a user sends a package with a Contact header with a missing left angle bracket (<) the server will crash. A possible workaround is to disable chan_sip.

    The vulnerability identified as AST-2011-010 (CVE-2011-2535) reported about an input validation error in the IAX2 channel driver. An unauthenticated attacker may crash an Asterisk server remotely by sending a crafted option control frame.


    For the oldstable distribution (lenny), this problem has been fixed in
    version 1.4.21.2~dfsg-3+lenny3.

    For the stable distribution (squeeze), this problem has been fixed in
    version 1.6.2.9-2+squeeze3.

    For the testing distribution (wheezy), this problem has been fixed in
    version 1:1.8.4.3-1.

    For the unstable distribution (sid), this problem has been fixed in
    version 1:1.8.4.3-1.

    We recommend that you upgrade your asterisk packages.

    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: http://www.debian.org/security/

    Mailing list: [email protected]

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