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Issue 902227 link

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Issue metadata

Status: Verified
Owner:
Closed: Nov 7
Cc:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Null-dereference READ in mz_zip_entry_is_dir

Project Member Reported by ClusterFuzz, Nov 6

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5674347480743936

Fuzzer: libFuzzer_minizip_uncompress_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  mz_zip_entry_is_dir
  minizip_uncompress_fuzzer.cc
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=605548:605551

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5674347480743936

Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.
 
Project Member

Comment 1 by ClusterFuzz, Nov 6

Cc: yawano@chromium.org
Labels: ClusterFuzz-Auto-CC
Automatically adding ccs based on OWNERS file / target commit history.

If this is incorrect, please add ClusterFuzz-Wrong label.
Project Member

Comment 2 by ClusterFuzz, Nov 6

Labels: Test-Predator-Auto-Owner
Owner: amistry@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/88c685f4de0a3fe6a07b97550dfa06a9fec54018 (Improve function and options coverage of minizip fuzzers).

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label. If you aren't the correct owner for this issue, please unassign yourself as soon as possible so it can be re-triaged.
Status: Started (was: Assigned)
This is already fixed in the upstream dev branch. Waiting for it to be merged into master before upreving.
Project Member

Comment 4 by bugdroid1@chromium.org, Nov 7

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/524918751efc06fc9d1cd1766ffac0bff1bb1a20

commit 524918751efc06fc9d1cd1766ffac0bff1bb1a20
Author: Anand K. Mistry <amistry@chromium.org>
Date: Wed Nov 07 07:37:49 2018

Uprev minizip to 2.7.4

BUG= 902227 ,901782

Change-Id: I130aedf1d2085089f7385ee13347894819f68e05
Reviewed-on: https://chromium-review.googlesource.com/c/1322181
Reviewed-by: Noel Gordon <noel@chromium.org>
Commit-Queue: Anand Mistry <amistry@chromium.org>
Cr-Commit-Position: refs/heads/master@{#605985}
[modify] https://crrev.com/524918751efc06fc9d1cd1766ffac0bff1bb1a20/DEPS
[modify] https://crrev.com/524918751efc06fc9d1cd1766ffac0bff1bb1a20/third_party/minizip/README.chromium

Project Member

Comment 5 by ClusterFuzz, Nov 7

ClusterFuzz has detected this issue as fixed in range 605984:605985.

Detailed report: https://clusterfuzz.com/testcase?key=5674347480743936

Fuzzer: libFuzzer_minizip_uncompress_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  mz_zip_entry_is_dir
  minizip_uncompress_fuzzer.cc
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=605548:605551
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=605984:605985

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5674347480743936

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.
Project Member

Comment 6 by ClusterFuzz, Nov 7

Labels: ClusterFuzz-Verified
Status: Verified (was: Started)
ClusterFuzz testcase 5674347480743936 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.

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