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Issue metadata

Status: Verified
Owner:
Closed: Jan 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Security



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Stack-buffer-overflow in AffixMgr::defcpd_check

Project Member Reported by ClusterFuzz, Dec 16 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6530638644772864

Fuzzer: libfuzzer_hunspell_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Stack-buffer-overflow WRITE 8
Crash Address: 0x7ffb336a3400
Crash State:
  AffixMgr::defcpd_check
  AffixMgr::compound_check
  AffixMgr::compound_check
  
Recommended Security Severity: High

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=438154:438196

Minimized Testcase (0.11 Kb): https://cluster-fuzz.appspot.com/download/AMIfv965KV1huEwqOisbBmZZog-_fQgYNjsNC4IrFAnhetEfzFpmJdffvlm6mlrtYBwczo6i03w8KtqFawew8EinJp8itki0lbGW0DGsONEuLkIyVhV_vyITRUXxEw_oF_8rn7RRrw2Sf2YWE6Z4n9c69HMcaGbbOQ?testcase_id=6530638644772864

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, Dec 17 2016

Labels: M-57
Project Member

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

Labels: Pri-1
Cc: rouslan@chromium.org
Owner: k...@chromium.org
Hi Kevin,

Assigning to you due to CL:  https://chromium.googlesource.com/chromium/src/+/047b36f906a4d3b957a2d7869eb41cdd74027fcb

Feel free to adjust labels or assign to more appropriate owner.  This is a high severity security regression, which will block releases, so consider reverting your changelist if a fix won't be quick.

Thanks!
Status: Assigned (was: Untriaged)
Components: UI>Browser>Spellcheck

Comment 7 by k...@chromium.org, Dec 21 2016

Status: Started (was: Assigned)
Project Member

Comment 8 by ClusterFuzz, Jan 13 2017

ClusterFuzz has detected this issue as fixed in range 443216:443239.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6530638644772864

Fuzzer: libfuzzer_hunspell_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Stack-buffer-overflow WRITE 8
Crash Address: 0x7ffb336a3400
Crash State:
  AffixMgr::defcpd_check
  AffixMgr::compound_check
  AffixMgr::compound_check
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=438154:438196
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=443216:443239

Minimized Testcase (0.11 Kb): https://cluster-fuzz.appspot.com/download/AMIfv965KV1huEwqOisbBmZZog-_fQgYNjsNC4IrFAnhetEfzFpmJdffvlm6mlrtYBwczo6i03w8KtqFawew8EinJp8itki0lbGW0DGsONEuLkIyVhV_vyITRUXxEw_oF_8rn7RRrw2Sf2YWE6Z4n9c69HMcaGbbOQ?testcase_id=6530638644772864

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 9 by ClusterFuzz, Jan 13 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Started)
ClusterFuzz testcase 6530638644772864 is verified as fixed, so closing issue.

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

Comment 10 by sheriffbot@chromium.org, Jan 13 2017

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

Comment 12 by sheriffbot@chromium.org, Apr 21 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
Components: -UI>Browser>Spellcheck UI>Browser>Language>Spellcheck

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