Debian: DSA-3299-1: stunnel4 security update

    Date02 Jul 2015
    CategoryDebian
    63
    Posted ByLinuxSecurity Advisories
    Johan Olofsson discovered an authentication bypass vulnerability in Stunnel, a program designed to work as an universal SSL tunnel for network daemons. When Stunnel in server mode is used with the redirect option and certificate-based authentication is enabled with "verify = 2"
    
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    Debian Security Advisory DSA-3299-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                     Salvatore Bonaccorso
    July 02, 2015                         https://www.debian.org/security/faq
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    Package        : stunnel4
    CVE ID         : CVE-2015-3644
    Debian Bug     : 785352
    
    Johan Olofsson discovered an authentication bypass vulnerability in
    Stunnel, a program designed to work as an universal SSL tunnel for
    network daemons. When Stunnel in server mode is used with the redirect
    option and certificate-based authentication is enabled with "verify = 2"
    or higher, then only the initial connection is redirected to the hosts
    specified with "redirect". This allows a remote attacker to bypass
    authentication.
    
    For the stable distribution (jessie), this problem has been fixed in
    version 3:5.06-2+deb8u1.
    
    For the testing distribution (stretch), this problem has been fixed
    in version 3:5.18-1.
    
    For the unstable distribution (sid), this problem has been fixed in
    version 3:5.18-1.
    
    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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