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Issue metadata

Status: Duplicate
Merged: issue 616668
Owner: ----
Closed: Oct 2016
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Security



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Heap-buffer-overflow in CGifLZWDecoder::ClearTable

Project Member Reported by ClusterFuzz, Oct 12 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6115234630860800

Fuzzer: libfuzzer_radamsa_pdf_codec_gif_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Heap-buffer-overflow WRITE 1
Crash Address: 0x62a000005232
Crash State:
  CGifLZWDecoder::ClearTable
  gif_load_frame
  CCodec_GifModule::LoadFrame
  
Recommended Security Severity: High

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=423381:423433

Minimized Testcase (0.24 Kb): https://cluster-fuzz.appspot.com/download/AMIfv97UZIT3UbD4wX0rgub1jdO0RebEkJS6B1O6gLepLftD9nxAnwH6UlLVDODWYtT40lA7F-ZNtT_piJwVLCATX4xLEOWUyhuEKlPS0nXq6nweUtS2X5aET9p016DUEiBFS8Thzs9A1Gg4a6Jt2B8zz5ZZFt_xpg?testcase_id=6115234630860800

Issue filed automatically.

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

Comment 1 by sheriffbot@chromium.org, Oct 12 2016

Labels: M-55
Project Member

Comment 2 by sheriffbot@chromium.org, Oct 12 2016

Labels: ReleaseBlock-Beta
This issue is a security regression. If you are not able to fix this quickly, please revert the change that introduced it.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
Project Member

Comment 3 by sheriffbot@chromium.org, Oct 12 2016

Labels: Pri-1

Comment 4 by mmoroz@chromium.org, Oct 12 2016

Components: Internals>Plugins>PDF
Status: Available (was: Untriaged)

Comment 5 by mmoroz@chromium.org, Oct 12 2016

Mergedinto: 616668
Status: Duplicate (was: Available)
Ah, that seems to be known issue for a while.
Project Member

Comment 6 by ClusterFuzz, Jan 11 2017

ClusterFuzz has detected this issue as fixed in range 442676:442736.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6115234630860800

Fuzzer: libfuzzer_radamsa_pdf_codec_gif_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Heap-buffer-overflow WRITE 1
Crash Address: 0x62a000005232
Crash State:
  CGifLZWDecoder::ClearTable
  gif_load_frame
  CCodec_GifModule::LoadFrame
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=423381:423433
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=442676:442736

Minimized Testcase (0.24 Kb): https://cluster-fuzz.appspot.com/download/AMIfv97UZIT3UbD4wX0rgub1jdO0RebEkJS6B1O6gLepLftD9nxAnwH6UlLVDODWYtT40lA7F-ZNtT_piJwVLCATX4xLEOWUyhuEKlPS0nXq6nweUtS2X5aET9p016DUEiBFS8Thzs9A1Gg4a6Jt2B8zz5ZZFt_xpg?testcase_id=6115234630860800

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.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 7 by sheriffbot@chromium.org, May 9 2018

Labels: -Restrict-View-SecurityTeam allpublic
This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

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