Debian Security Advisory DSA-3299-1 firstname.lastname@example.org https://www.debian.org/security/ Salvatore Bonaccorso July 02, 2015 https://www.debian.org/security/faq
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/
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