Debian: DSA-2664-1: stunnel4 security update
Debian: DSA-2664-1: stunnel4 security update
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.