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    Debian: DSA-2664-1: stunnel4 security update

    Date
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    Stunnel, a program designed to work as an universal SSL tunnel for network daemons, is prone to a buffer overflow vulnerability when using the Microsoft NT LAN Manager (NTLM) authentication ("protocolAuthentication = NTLM") together with the 'connect' protocol
    
    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-2664-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                      Salvatore Bonaccorso
    May 2, 2013                            https://www.debian.org/security/faq
    - -------------------------------------------------------------------------
    
    Package        : stunnel4
    Vulnerability  : buffer overflow
    Problem type   : remote
    Debian-specific: no
    CVE ID         : CVE-2013-1762
    Debian Bug     : 702267
    
    Stunnel, a program designed to work as an universal SSL tunnel for
    network daemons, is prone to a buffer overflow vulnerability when using
    the Microsoft NT LAN Manager (NTLM) authentication
    ("protocolAuthentication = NTLM") together with the 'connect' protocol
    method ("protocol = connect"). With these prerequisites and using
    stunnel4 in SSL client mode ("client = yes") on a 64bit host, an attacker
    could possibly execute arbitrary code with the privileges of the stunnel
    process, if the attacker can either control the specified proxy server or
    perform man-in-the-middle attacks on the tcp session between stunnel and
    the proxy sever.
    
    Note that for the testing distribution (wheezy) and the unstable
    distribution (sid), stunnel4 is compiled with stack smashing protection
    enabled, which should help protect against arbitrary code execution.
    
    For the stable distribution (squeeze), this problem has been fixed in
    version 3:4.29-1+squeeze1.
    
    For the testing distribution (wheezy), this problem has been fixed in
    version 3:4.53-1.1.
    
    For the unstable distribution (sid), this problem has been fixed in
    version 3:4.53-1.1.
    
    We recommend that you upgrade your stunnel4 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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