Description
aMSN (aka Alvaro's Messenger) 0.98.3 and earlier, when SSL is used, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) field or a Subject Alternative Name field of the X.509 certificate, which allows man-in-the-middle attackers to spoof an MSN server via an arbitrary certificate.
Affected products
- alvaro / alvaros_messenger0.98.3
- alvaro / alvaros_messenger0.83 – 0.83
- alvaro / alvaros_messenger0.90 – 0.90
- alvaro / alvaros_messenger0.91 – 0.91
- alvaro / alvaros_messenger0.92 – 0.92
- alvaro / alvaros_messenger0.93 – 0.93
- alvaro / alvaros_messenger0.94 – 0.94
- alvaro / alvaros_messenger0.95 – 0.95
- alvaro / alvaros_messenger0.96 – 0.96
- alvaro / alvaros_messenger0.97 – 0.97
References
- MAILING_LISThttp://lists.fedoraproject.org/pipermail/package-announce/2010-May/041046.html
- MISChttp://amsn.svn.sourceforge.net/viewvc/amsn/trunk/?view=log&pathrev=11991
- MAILING_LISThttp://www.openwall.com/lists/oss-security/2010/03/10/4
- VENDOR_ADVISORYhttp://secunia.com/advisories/39796
- MISChttp://amsn.svn.sourceforge.net/viewvc/amsn/trunk/amsn/sip.tcl?r1=11953&r2=11991&pathrev=11991
- MISChttp://amsn.svn.sourceforge.net/viewvc/amsn/trunk/amsn/proxy.tcl?r1=11886&r2=11991&pathrev=11991
- MISChttp://www.securityfocus.com/bid/35507
- VENDOR_ADVISORYhttp://bugs.debian.org/cgi-bin/bugreport.cgi?bug=572818
- MAILING_LISThttp://www.openwall.com/lists/oss-security/2010/04/01/4
- MAILING_LISThttp://seclists.org/bugtraq/2009/Jun/239
- MISChttp://www.opensource-archive.org/showthread.php?p=183821
- MISChttp://amsn.svn.sourceforge.net/viewvc/amsn/trunk/amsn/soap.tcl?r1=11891&r2=11991&pathrev=11991
- VENDOR_ADVISORYhttp://secunia.com/advisories/35621
- VENDOR_ADVISORYhttp://www.vupen.com/english/advisories/2010/1109
- MAILING_LISThttp://lists.fedoraproject.org/pipermail/package-announce/2010-May/041079.html