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    Debian: DSA-2276-1: asterisk security update

    Date
    115
    Posted By
    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.
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    Debian Security Advisory DSA-2276-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                             Luciano Bello
    July 10, 2011                          https://www.debian.org/security/faq
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    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: 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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