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Issue metadata

Status: Duplicate
Merged: issue 795131
Owner:
Closed: Dec 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Security



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Heap-buffer-overflow in ReadUnalignedValue<unsigned

Project Member Reported by ClusterFuzz, Dec 16 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6092768110968832

Fuzzer: libFuzzer_v8_wasm_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: Heap-buffer-overflow READ 1
Crash Address: 0x60f0000002c4
Crash State:
  ReadUnalignedValue<unsigned
  ReadLittleEndianValue<unsigned
  read_little_endian<unsigned
  
Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=524053:524063

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6092768110968832

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Dec 16 2017

Components: Blink>JavaScript>WebAssembly
Labels: Test-Predator-Auto-Components
Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.
Project Member

Comment 2 by ClusterFuzz, Dec 16 2017

Cc: clemensh@chromium.org
Labels: Test-Predator-Auto-CC
Automatically adding ccs based on suspected regression changelists:

[wasm] Simplify bounds check by clemensh@chromium.org - https://chromium.googlesource.com/v8/v8/+/5aaeb2fd1c5fb08bf1f96563d5f891621a428a0b

[wasm] Introduce LoadType and StoreType enums by clemensh@chromium.org - https://chromium.googlesource.com/v8/v8/+/aba57b116410d42d0cfc8201680398a9d83b54cd

If this is incorrect, please apply the Test-Predator-Wrong-CLs label.
Project Member

Comment 3 by sheriffbot@chromium.org, Dec 16 2017

Labels: M-65
Project Member

Comment 4 by sheriffbot@chromium.org, Dec 16 2017

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

If this doesn't affect a release branch, or has not been properly classified for severity, please update the Security_Impact or Security_Severity labels, and remove the ReleaseBlock label. To disable this altogether, apply ReleaseBlock-NA.

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

Comment 5 by sheriffbot@chromium.org, Dec 16 2017

Labels: Pri-1

Comment 6 by cthomp@chromium.org, Dec 18 2017

Cc: -clemensh@chromium.org
Owner: clemensh@chromium.org
clemensh@ Could you take a look at this, or help find an owner?
Project Member

Comment 7 by sheriffbot@chromium.org, Dec 18 2017

Status: Assigned (was: Untriaged)
Mergedinto: 795131
Status: Duplicate (was: Assigned)
Project Member

Comment 9 by ClusterFuzz, Dec 20 2017

ClusterFuzz has detected this issue as fixed in range 525156:525177.

Detailed report: https://clusterfuzz.com/testcase?key=6092768110968832

Fuzzer: libFuzzer_v8_wasm_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: Heap-buffer-overflow READ 1
Crash Address: 0x60f0000002c4
Crash State:
  ReadUnalignedValue<unsigned
  ReadLittleEndianValue<unsigned
  read_little_endian<unsigned
  
Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=524053:524063
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=525156:525177

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6092768110968832

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.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 10 by sheriffbot@chromium.org, Mar 27 2018

Labels: -Security_Impact-Head Security_Impact-Stable
Project Member

Comment 11 by sheriffbot@chromium.org, Mar 29 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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