A denial of service flaw was found in the way sFlow dissector of Wireshark, a network traffic analyzer, performed dissection of certain sFlow packet capture files. A remote attacker could provide a specially-crafted sFlow packet / packet capture that, when processed, would lead to excessive CPU consumption or into situation where tshark executable would enter an infinite loop, when trying to process the crafted packet / packet capture file. Upstream bug report: [1] https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7789 References: [2] http://www.wireshark.org/security/wnpa-sec-2012-32.html [3] http://www.wireshark.org/docs/relnotes/wireshark-1.8.4.html Relevant upstream patch: [4] http://anonsvn.wireshark.org/viewvc?view=revision&revision=45324 Reproducer: [5] http://www.wireshark.org/download/automated/captures/fuzz-2012-10-03-25361.pcap
This issue did NOT affect the versions of the wireshark package, as shipped with Red Hat Enterprise Linux 5 and 6. -- This issue affects the versions of the wireshark package, as shipped with Fedora release of 16 and 17.
Created wireshark tracking bugs for this issue Affects: fedora-all [bug 881873]
This was assigned CVE-2012-5594: http://www.openwall.com/lists/oss-security/2012/11/29/5
Statement CVE-2012-6054: Not vulnerable. This issue did not affect the versions of wireshark as shipped with Red Hat Enterprise Linux 5 and 6.
CVE-2012-5594 identifier has been rejected by Mitre in favour of CVE-2012-6054: Name: CVE-2012-5594 ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2012-6054. Reason: This candidate is a reservation duplicate of CVE-2012-6054. Notes: All CVE users should reference CVE-2012-6054 instead of this candidate. All references and descriptions in this candidate have been removed to prevent accidental usage. -- The correct CVE identifier this particular wireshark flaw should be referenced under (from now on) is CVE-2012-6054.