The csnStreamDissector function in epan/dissectors/packet-csn1.c in the CSN.1 dissector in Wireshark 1.6.x before 1.6.13 and 1.8.x before 1.8.5 does not properly handle a large number of padding bits, which allows remote attackers to cause a denial of service (infinite loop) via a malformed packet.

References

• https://nvd.nist.gov/vuln/detail/CVE-2013-1573
• https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=8037
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16016
• http://anonsvn.wireshark.org/viewvc/trunk/epan/dissectors/packet-csn1.c?r1=46335&r2=46334&pathrev=46335
• http://anonsvn.wireshark.org/viewvc?view=revision&revision=46335
• http://lists.opensuse.org/opensuse-updates/2013-02/msg00028.html
• http://lists.opensuse.org/opensuse-updates/2013-02/msg00037.html
• http://www.wireshark.org/security/wnpa-sec-2013-01.html