Wireshark - erf_meta_read_tag SIGSEGV

EDB-ID:

39877

CVE:

N/A


Platform:

Multiple

Published:

2016-06-01

Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=803

The following SIGSEGV crash due to an invalid memory read can be observed in an ASAN build of Wireshark (current git master), by feeding a malformed file to tshark ("$ ./tshark -nVxr /path/to/file"):

--- cut ---
==28415==ERROR: AddressSanitizer: SEGV on unknown address 0x61b000022d84 (pc 0x7f0e1b0002a2 bp 0x7ffde25a76f0 sp 0x7ffde25a7630 T0)
    #0 0x7f0e1b0002a1 in erf_meta_read_tag wireshark/wiretap/erf.c:1242:13
    #1 0x7f0e1afff0f0 in populate_summary_info wireshark/wiretap/erf.c:1851:27
    #2 0x7f0e1aff34d6 in erf_read wireshark/wiretap/erf.c:447:7
    #3 0x7f0e1b1a746b in wtap_read wireshark/wiretap/wtap.c:1245:7
    #4 0x528196 in load_cap_file wireshark/tshark.c:3478:12
    #5 0x51e67c in main wireshark/tshark.c:2192:13

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV wireshark/wiretap/erf.c:1242:13 in erf_meta_read_tag
==28415==ABORTING
--- cut ---

The crash was reported at https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=12352. Attached are three files which trigger the crash.


Proof of Concept:
https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/39877.zip