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https://issues.apache.org/jira/browse/PROTON-1979?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16722199#comment-16722199
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Jiri Daněk commented on PROTON-1979:
------------------------------------
There is still one last crash open, for inputs like these. It's an array in an
array in an array, ... this time without any described types.
https://oss-fuzz.com/testcase-detail/5920119225057280
{noformat}
==1==ERROR: MemorySanitizer: stack-overflow on address 0x7ffe94b70fe0 (pc
0x00000051d2c5 bp 0x7ffe94b71080 sp 0x7ffe94b70fe0 T1)
#0 0x51d2c4 in pni_data_current /src/qpid-proton/c/src/core/codec.c:1224:35
#1 0x51d2c4 in pni_data_add /src/qpid-proton/c/src/core/codec.c:1457
#2 0x502736 in pn_data_put_array /src/qpid-proton/c/src/core/codec.c:1548:22
#3 0x526929 in pni_decoder_decode_value
/src/qpid-proton/c/src/core/decoder.c:403:15
#4 0x5272d8 in pni_decoder_decode_value
/src/qpid-proton/c/src/core/decoder.c:414:15
#5 0x5272d8 in pni_decoder_decode_value
/src/qpid-proton/c/src/core/decoder.c:414:15
#6 0x5272d8 in pni_decoder_decode_value
/src/qpid-proton/c/src/core/decoder.c:414:15
#7 0x5272d8 in pni_decoder_decode_value
/src/qpid-proton/c/src/core/decoder.c:414:15
#8 0x5272d8 in pni_decoder_decode_value
/src/qpid-proton/c/src/core/decoder.c:414:15
#9 0x5272d8 in pni_decoder_decode_value
/src/qpid-proton/c/src/core/decoder.c:414:15
#10 0x5272d8 in pni_decoder_decode_value
/src/qpid-proton/c/src/core/decoder.c:414:15
#11 0x5272d8 in pni_decoder_decode_value
/src/qpid-proton/c/src/core/decoder.c:414:15
#12 0x5272d8 in pni_decoder_decode_value
/src/qpid-proton/c/src/core/decoder.c:414:15
#13 0x5272d8 in pni_decoder_decode_value
/src/qpid-proton/c/src/core/decoder.c:414:15
#14 0x5272d8 in pni_decoder_decode_value
/src/qpid-proton/c/src/core/decoder.c:414:15
#15 0x5272d8 in pni_decoder_decode_value
/src/qpid-proton/c/src/core/decoder.c:414:15
[...]
{noformat}
> Decoding a bad message can overflow the stack
> ---------------------------------------------
>
> Key: PROTON-1979
> URL: https://issues.apache.org/jira/browse/PROTON-1979
> Project: Qpid Proton
> Issue Type: Bug
> Components: proton-c
> Reporter: Andrew Stitcher
> Assignee: Andrew Stitcher
> Priority: Major
> Labels: fuzzer
> Fix For: proton-c-0.27.0
>
>
> Found by oss-fuzz: [https://oss-fuzz.com/testcase?key=5920119225057280]
> A message with a described type whose descriptor is an array containing
> described types of an array containing described types of... can cause enough
> stack use to overflow the process stack.
> The message is quite long (and essentially meaningless) but none the less
> syntactically valid.
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