Created attachment 1314605 [details]
Triggered by "./pspp-convert POC5 -O csv /dev/null"

Description of problem:

There is an assertion abort in function dict_rename_var() of libpspp.

Version-Release number of selected component (if applicable):

<= latest version

How reproducible:

./pspp-convert POC5 -O csv /dev/null

Steps to Reproduce:

Normal output:

$./pspp-convert POC5 -O csv /dev/null
id:000018,sig:06,src:001331,op:arith8,pos:678,val:-1': This system file does not indicate its own character encoding.  Using default encoding UTF-8.  For best results, specify an encoding explicitly.  Use SYSFILE INFO with ENCODING="DETECT" to analyze the possible encodings.
`id:000018,sig:06,src:001331,op:arith8,pos:678,val:-1' near offset 0xd4: Renaming variable with duplicate name `VAR00003' to `VAR001'.
`id:000018,sig:06,src:001331,op:arith8,pos:678,val:-1' near offset 0xf4: Renaming variable with duplicate name `VAR00003' to `VAR002'.
pspp-convert: src/data/dictionary.c:768: void dict_rename_var(struct dictionary *, struct variable *, const char *): Assertion `!utf8_strcasecmp (var_get_name (v), new_name) || dict_lookup_var (d, new_name) == ((void*)0)' failed.
Aborted

The  GDB debugging information is as follows:

(gdb) r
...

Breakpoint 3, dict_rename_var (d=0x611000009a00, v=0x610000007240, new_name=0x60d00000cc79 "VAR00001") at src/data/dictionary.c:767
767	  assert (!utf8_strcasecmp (var_get_name (v), new_name)
(gdb) c 3 
Will ignore next 2 crossings of breakpoint 3.  Continuing.

Breakpoint 3, dict_rename_var (d=0x611000009a00, v=0x610000007e40, new_name=0x60d00000ccaf "VAR00003") at src/data/dictionary.c:767
767	  assert (!utf8_strcasecmp (var_get_name (v), new_name)
(gdb) n
pspp-convert: src/data/dictionary.c:768: void dict_rename_var(struct dictionary *, struct variable *, const char *): Assertion `!utf8_strcasecmp (var_get_name (v), new_name) || dict_lookup_var (d, new_name) == ((void*)0)' failed.

Program received signal SIGABRT, Aborted.
0x00007ffff62331c7 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
55	../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) bt
#0  0x00007ffff62331c7 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
#1  0x00007ffff6234e2a in __GI_abort () at abort.c:89
#2  0x00007ffff622c0bd in __assert_fail_base (fmt=0x7ffff638df78 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", 
    assertion=assertion@entry=0x7ffff7ae4aa0 <.str16> "!utf8_strcasecmp (var_get_name (v), new_name) || dict_lookup_var (d, new_name) == ((void*)0)", file=file@entry=0x7ffff7ae4100 <.str2> "src/data/dictionary.c", line=line@entry=768, 
    function=function@entry=0x7ffff7ae4b20 <__PRETTY_FUNCTION__.dict_rename_var> "void dict_rename_var(struct dictionary *, struct variable *, const char *)") at assert.c:92
#3  0x00007ffff622c172 in __GI___assert_fail (
    assertion=0x7ffff7ae4aa0 <.str16> "!utf8_strcasecmp (var_get_name (v), new_name) || dict_lookup_var (d, new_name) == ((void*)0)", 
    file=0x7ffff7ae4100 <.str2> "src/data/dictionary.c", line=768, 
    function=0x7ffff7ae4b20 <__PRETTY_FUNCTION__.dict_rename_var> "void dict_rename_var(struct dictionary *, struct variable *, const char *)") at assert.c:101
#4  0x00007ffff78a2c3d in dict_rename_var (d=<optimized out>, v=<optimized out>, new_name=<optimized out>) at src/data/dictionary.c:767
#5  0x00007ffff792539f in rename_var_and_save_short_names (dict=0x611000009a00, var=0x610000007e40, new_name=0x60d00000ccaf "VAR00003")
    at src/data/sys-file-reader.c:2018
#6  0x00007ffff7919da7 in parse_long_var_name_map (record=<optimized out>, dict=<optimized out>, r=<optimized out>)
    at src/data/sys-file-reader.c:2086
#7  sfm_decode (r_=<optimized out>, encoding=<optimized out>, dictp=0x7fffffffe380, infop=0x0) at src/data/sys-file-reader.c:843
#8  0x00007ffff78480c1 in any_reader_decode (any_reader=0x61800000f880, encoding=0x0, dictp=0x7fffffffe380, info=0x0)
    at src/data/any-reader.c:147
#9  any_reader_open_and_decode (handle=<optimized out>, encoding=0x0, dictp=0x7fffffffe380, info=0x0) at src/data/any-reader.c:171
#10 0x00000000004dcc97 in main (argc=<optimized out>, argv=<optimized out>) at utilities/pspp-convert.c:174
(gdb) c
Continuing.

Program terminated with signal SIGABRT, Aborted.
The program no longer exists.


The vulnerability was triggered in function:
dict_rename_var (d=0x611000009a00, v=0x610000007240, new_name=0x60d00000cc79 "VAR00001") at src/data/dictionary.c:767
767	  assert (!utf8_strcasecmp (var_get_name (v), new_name)



Actual results:

crash

Expected results:

crash

Additional info:

Credits:

This vulnerability is detected by team OWL337, with our custom fuzzer collAFL. Please contact ganshuitao   and chaoz.cn if you need more info about the team, the tool or the vulnerability.