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Issue metadata

Status: Verified
Owner:
Closed: Nov 2016
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Security



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Use-of-uninitialized-value in fclamp

Project Member Reported by ClusterFuzz, Nov 19 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4884525227442176

Fuzzer: libfuzzer_pdf_codec_icc_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  fclamp
  BilinearInterpFloat
  _LUTevalFloat
  
Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=430492:430537

Minimized Testcase (0.50 Kb): https://cluster-fuzz.appspot.com/download/AMIfv948jKzUOVFunU-Ub2STZER0e0FduzKGDI2mVsGGlg9lF80YJUvxmBgKckvC68GAfD7_3RxbLP1GUrTiLrSXYwer99ttRdRwPpl-wWevyFNhfQY_MdNdEOFxCSQyW61dSzChEtJLTeMSXeuK5YisoNV4YRrDfQ?testcase_id=4884525227442176

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, Nov 20 2016

Labels: M-56
Project Member

Comment 2 by sheriffbot@chromium.org, Nov 20 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, Nov 20 2016

Labels: Pri-1
Components: Internals>Plugins>PDF
Owner: thestig@chromium.org
Status: Assigned (was: Untriaged)
Can you take a look at this or route it to someone who can? Thanks.
Cc: thestig@chromium.org
Owner: kcwu@chromium.org
kcwu@ more ICC fuzzer fun. Please feel free to assign back if you don't have time.
Project Member

Comment 6 by ClusterFuzz, Nov 23 2016

ClusterFuzz has detected this issue as fixed in range 433980:434071.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4884525227442176

Fuzzer: libfuzzer_pdf_codec_icc_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  fclamp
  BilinearInterpFloat
  _LUTevalFloat
  
Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=430492:430537
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=433980:434071

Minimized Testcase (0.50 Kb): https://cluster-fuzz.appspot.com/download/AMIfv948jKzUOVFunU-Ub2STZER0e0FduzKGDI2mVsGGlg9lF80YJUvxmBgKckvC68GAfD7_3RxbLP1GUrTiLrSXYwer99ttRdRwPpl-wWevyFNhfQY_MdNdEOFxCSQyW61dSzChEtJLTeMSXeuK5YisoNV4YRrDfQ?testcase_id=4884525227442176

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, Nov 23 2016

ClusterFuzz has detected this issue as fixed in range 433980:434071.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4884525227442176

Fuzzer: libfuzzer_pdf_codec_icc_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  fclamp
  BilinearInterpFloat
  _LUTevalFloat
  
Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=430492:430537
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=433980:434071

Minimized Testcase (0.50 Kb): https://cluster-fuzz.appspot.com/download/AMIfv948jKzUOVFunU-Ub2STZER0e0FduzKGDI2mVsGGlg9lF80YJUvxmBgKckvC68GAfD7_3RxbLP1GUrTiLrSXYwer99ttRdRwPpl-wWevyFNhfQY_MdNdEOFxCSQyW61dSzChEtJLTeMSXeuK5YisoNV4YRrDfQ?testcase_id=4884525227442176

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.

Comment 8 by kcwu@chromium.org, Nov 23 2016

https://pdfium.googlesource.com/pdfium/+/89a2d92549d25df6786d53de5671eb141e1fd3e2%5E%21/ has stricter requirement for input colorspace. I don't know whether it really fixed this problem or just hide it.
Project Member

Comment 9 by ClusterFuzz, Nov 23 2016

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

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

Comment 10 by sheriffbot@chromium.org, Nov 23 2016

Labels: -Restrict-View-SecurityTeam Restrict-View-SecurityNotify
Labels: -ReleaseBlock-Beta ReleaseBlock-Stable Merge-Request-56
Project Member

Comment 12 by sheriffbot@chromium.org, Dec 16 2016

Labels: -Merge-Request-56 Merge-Review-56 Hotlist-Merge-Review
This bug requires manual review: No test file found in commits.
Please contact the milestone owner if you have questions.
Owners: amineer@(clank), cmasso@(bling), gkihumba@(cros), bustamante@(desktop)

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

Comment 13 by dimu@google.com, Dec 16 2016

Labels: -Merge-Review-56 -Hotlist-Merge-Review
[Automated comment] removing mislabelled Merge-Review-56, Hotlist-Merge-Review
Labels: -M-56 -ReleaseBlock-Stable M-57
Removing RBS since we don't have an identified fix to merge.
Project Member

Comment 15 by sheriffbot@chromium.org, Mar 1 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

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