31 lines
No EOL
1.4 KiB
Text
31 lines
No EOL
1.4 KiB
Text
Sample generated with AFL
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Build Information:
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TShark 1.12.9 (v1.12.9-0-gfadb421 from (HEAD)
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Copyright 1998-2015 Gerald Combs <gerald@wireshark.org> and contributors.
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This is free software; see the source for copying conditions. There is NO
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warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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Compiled (64-bit) with GLib 2.48.1, with libpcap, with libz 1.2.8, with POSIX
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capabilities (Linux), with libnl 3, without SMI, with c-ares 1.11.0, without
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Lua, without Python, with GnuTLS 3.4.13, with Gcrypt 1.7.1, with MIT Kerberos,
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with GeoIP.
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Running on Linux 4.6.2-1-ARCH, with locale en_US.utf8, with libpcap version
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1.7.4, with libz 1.2.8.
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Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz
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Built using clang 4.2.1 Compatible Clang 3.8.0 (tags/RELEASE_380/final).
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--
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This issue was uncovered with AFL (http://lcamtuf.coredump.cx/afl/)
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There is a bug in dissect_nds_request located in epan/dissectors/packet-ncp2222.inc.
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dissect_nds_request attempts to call ptvcursor_free() near packet-ncp2222.inc:11806 using the variable ptvc that is set to null at the start of dissect_nds_request. Using the attached sample, the only place ptvc could be set (~ncp2222.inc:11618) is never executed and thus ptvc remains a null pointer.
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Credit goes to Chris Benedict, Aurelien Delaitre, NIST SAMATE Project, https://samate.nist.gov
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Proof of Concept:
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https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/40194.zip |