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Issue metadata

Status: WontFix
Owner:
Closed: May 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , All
Pri: 1
Type: Bug-Security

Blocking:
issue 62400



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Use-of-uninitialized-value in CFGAS_TextStream::InitStream

Project Member Reported by ClusterFuzz, Apr 18 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6090451762544640

Fuzzer: libfuzzer_pdfium_xfa_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  CFGAS_TextStream::InitStream
  CFX_RetainPtr<CFGAS_TextStream> pdfium::MakeRetain<CFGAS_TextStream, std::__1::u
  IFGAS_Stream::CreateReadStream
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=465141:465158

Reproducer Testcase: https://clusterfuzz.com/download/AMIfv94027vPA3JK27PF1l06AltXLXFwOHkv4m7xbd90tHge2Hsz_heGWltk69f8lfSbasmuejxx4M4RP6t6gaTD8XwQ3MIqwED5BauxMaEpXfpo-IA_UkcIdp_gsWtIkFHHGMP_jXF_e8RJPyoTL-lmZd1EDEHknXu-jN0k8o8N7iUBgyG308hB2BEgNzwagH92TOBctqYNKIBue0qjcNFkfZBNj0jiHOGBDnYPQKexBqE7HwH5qmXseCzcP7bXfjEdDl3wyG1f-gNf8ZfJPrGR8rpv_E6K59L5hD8QBmO4yKXFhusWVRagslZnHiwFvP-C8JIz3pteSRGy_BTCXXK-XRVz1B507X79kxlRc9-IFmaZK4hWIPU?testcase_id=6090451762544640


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, Apr 18 2017

Labels: M-59
Project Member

Comment 2 by sheriffbot@chromium.org, Apr 18 2017

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, Apr 18 2017

Labels: Pri-1

Comment 4 by palmer@chromium.org, Apr 19 2017

Cc: thestig@chromium.org dsinclair@chromium.org
Components: Internals>Plugins>PDF
Labels: -OS-Linux OS-All
Owner: tsepez@chromium.org
Status: Assigned (was: Untriaged)
Project Member

Comment 5 by ClusterFuzz, Apr 19 2017

Labels: OS-Linux
Project Member

Comment 6 by ClusterFuzz, Apr 19 2017

ClusterFuzz has detected this issue as fixed in range 465158:465177.

Detailed report: https://clusterfuzz.com/testcase?key=6090451762544640

Fuzzer: libfuzzer_pdfium_xfa_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  CFGAS_TextStream::InitStream
  CFX_RetainPtr<CFGAS_TextStream> pdfium::MakeRetain<CFGAS_TextStream, std::__1::u
  IFGAS_Stream::CreateReadStream
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=465141:465158
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=465158:465177

Reproducer Testcase: https://clusterfuzz.com/download/AMIfv94027vPA3JK27PF1l06AltXLXFwOHkv4m7xbd90tHge2Hsz_heGWltk69f8lfSbasmuejxx4M4RP6t6gaTD8XwQ3MIqwED5BauxMaEpXfpo-IA_UkcIdp_gsWtIkFHHGMP_jXF_e8RJPyoTL-lmZd1EDEHknXu-jN0k8o8N7iUBgyG308hB2BEgNzwagH92TOBctqYNKIBue0qjcNFkfZBNj0jiHOGBDnYPQKexBqE7HwH5qmXseCzcP7bXfjEdDl3wyG1f-gNf8ZfJPrGR8rpv_E6K59L5hD8QBmO4yKXFhusWVRagslZnHiwFvP-C8JIz3pteSRGy_BTCXXK-XRVz1B507X79kxlRc9-IFmaZK4hWIPU?testcase_id=6090451762544640


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 ClusterFuzz, Apr 19 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6090451762544640 is verified as fixed, so closing issue.

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

Comment 8 by sheriffbot@chromium.org, Apr 19 2017

Labels: -Restrict-View-SecurityTeam Restrict-View-SecurityNotify
Cc: -dsinclair@chromium.org tsepez@chromium.org
Labels: -ReleaseBlock-Beta -Security_Impact-Head ClusterFuzz-Wrong Security_Impact-None
Owner: dsinclair@chromium.org
Status: Available (was: Verified)
Don't see any reason why this would be fixed. Re-opening. Removed the Release-Block as this is XFA and is not enabled on any branch of chrome.
Blocking: 62400
Project Member

Comment 11 by sheriffbot@chromium.org, Apr 20 2017

Status: Assigned (was: Available)
Status: WontFix (was: Assigned)
Bulk-WontFixing these bugs. This was a bug on ClusterFuzz side, see bug 717534. We will start seeing new testcases auto-filed in a day or two. We can't leave these open as ClusterFuzz won't autoverify them after ClusterFuzz-Wrong label.
Project Member

Comment 13 by sheriffbot@chromium.org, Aug 9 2017

Labels: -Restrict-View-SecurityNotify 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
Labels: -ClusterFuzz-Wrong
We have made a bunch of changes on ClusterFuzz side, so resetting ClusterFuzz-Wrong label.

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