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Issue metadata

Status: Verified
Owner:
Last visit > 30 days ago
Closed: Aug 2016
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Security



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Stack-buffer-overflow in SfxEntry::checkword

Project Member Reported by ClusterFuzz, Aug 17 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5767233576108032

Fuzzer: libfuzzer_hunspell_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Stack-buffer-overflow WRITE {*}
Crash Address: 0x7fe979910124
Crash State:
  SfxEntry::checkword
  AffixMgr::suffix_check
  SuggestMgr::checkword
  
Recommended Security Severity: High


Minimized Testcase (0.09 Kb): https://cluster-fuzz.appspot.com/download/AMIfv976gZSsWK-14aMn_Z-RMKN8OACYCIYZLZnTD1HArRj6H5pcLf_sSLbfAmNZ_s92MxCnadWMORRWAJ_OvRDr-uvn9JpRGmu1_MUOgIZljfhNv1LoUB5zR4-7IIO3pIPdL75OhyNdPST1esAxvKQ4sdgE-vcH6g?testcase_id=5767233576108032

Issue manually filed by: mmoroz

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

Comment 1 by mmoroz@chromium.org, Aug 17 2016

Cc: mmoroz@chromium.org rouslan@chromium.org kcc@chromium.org aizatsky@chromium.org
Components: UI>Browser>Spellcheck
Labels: Pri-1
Owner: groby@chromium.org
Project Member

Comment 2 by sheriffbot@chromium.org, Aug 17 2016

Status: Assigned (was: Untriaged)
Labels: Security_Impact-Head
Project Member

Comment 4 by sheriffbot@chromium.org, Aug 18 2016

Labels: M-54
Project Member

Comment 5 by sheriffbot@chromium.org, Aug 18 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 6 by ClusterFuzz, Aug 27 2016

ClusterFuzz has detected this issue as fixed in range 414871:414881.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5767233576108032

Fuzzer: libfuzzer_hunspell_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Stack-buffer-overflow WRITE {*}
Crash Address: 0x7fe979910124
Crash State:
  SfxEntry::checkword
  AffixMgr::suffix_check
  SuggestMgr::checkword
  
Recommended Security Severity: High

Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=414871:414881

Minimized Testcase (0.09 Kb): https://cluster-fuzz.appspot.com/download/AMIfv976gZSsWK-14aMn_Z-RMKN8OACYCIYZLZnTD1HArRj6H5pcLf_sSLbfAmNZ_s92MxCnadWMORRWAJ_OvRDr-uvn9JpRGmu1_MUOgIZljfhNv1LoUB5zR4-7IIO3pIPdL75OhyNdPST1esAxvKQ4sdgE-vcH6g?testcase_id=5767233576108032

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, Aug 27 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 8 by sheriffbot@chromium.org, Aug 28 2016

Labels: -Restrict-View-SecurityTeam Restrict-View-SecurityNotify
Project Member

Comment 9 by sheriffbot@chromium.org, Dec 3 2016

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
Components: -UI>Browser>Spellcheck UI>Browser>Language>Spellcheck

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