[Bug binutils/22510] New: Segmentation fault on load_debug_section

[mgcho.minic at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=22510

            Bug ID: 22510
           Summary: Segmentation fault on load_debug_section
           Product: binutils
           Version: 2.30 (HEAD)
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: mgcho.minic at gmail dot com
  Target Milestone: ---

Created attachment 10646
  --> https://sourceware.org/bugzilla/attachment.cgi?id=10646&action=edit
poc of the crash

Triggered by "./readelf -w $POC"
Tested on Ubuntu 16.04 (x86)

Segmentation fault occurred when processing malformed ELF file.


The GDB debugging information is as follows:

Program received signal SIGSEGV, Segmentation fault.
0x08049298 in load_debug_section (debug=str, data=0x8104908) at readelf.c:13584
13584         if (strs != NULL && strs->sh_size != 0)
(gdb) bt
#0  0x08049298 in load_debug_section (debug=str, data=0x8104908) at
readelf.c:13584
#1  0x0809abcf in load_separate_debug_file (file=0x8104908, 
    filename=0xbffff2b8 "/home/min/Downloads/load_debug_section") at
dwarf.c:9839
#2  0x0805264f in process_object (filedata=0x8104908) at readelf.c:18569
#3  0x0804b079 in process_file (file_name=0xbffff2b8
"/home/min/Downloads/load_debug_section") at readelf.c:18991
#4  0x0804a42a in main (argc=3, argv=0xbffff0a4) at readelf.c:19050


Credits:

Mingi Cho and Taekyoung Kwon of the Information Security Lab, Yonsei
University.

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