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Issue metadata

Status: Duplicate
Merged: issue 800451
Owner: ----
Closed: Jan 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: ----
Type: Bug-Security



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Heap-use-after-free in fxcrt::UnownedPtr<CXFA_LayoutItem>::ProbeForLowSeverityLifetimeIssue

Project Member Reported by ClusterFuzz, Jan 11 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5363653640716288

Fuzzer: afl_pdfium_xfa_fuzzer
Job Type: afl_chrome_asan
Crash Type: Heap-use-after-free READ 1
Crash Address: 0x60c00005cfc0
Crash State:
  fxcrt::UnownedPtr<CXFA_LayoutItem>::ProbeForLowSeverityLifetimeIssue
  CJX_Object::~CJX_Object
  CJX_PageSet::~CJX_PageSet
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5363653640716288

Issue manually filed by: metzman

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.
 
Components: Internals>Plugins>PDF
Cc: metzman@chromium.org
Mergedinto: 800451
Status: Duplicate (was: Untriaged)
Not sure why this got refiled.
Project Member

Comment 3 by ClusterFuzz, Jan 13 2018

Labels: Security_Impact-Beta
Detailed report: https://clusterfuzz.com/testcase?key=5363653640716288

Fuzzer: afl_pdfium_xfa_fuzzer
Job Type: afl_chrome_asan
Crash Type: Heap-use-after-free READ 1
Crash Address: 0x60c00005cfc0
Crash State:
  fxcrt::UnownedPtr<CXFA_LayoutItem>::ProbeForLowSeverityLifetimeIssue
  CJX_Object::~CJX_Object
  CJX_PageSet::~CJX_PageSet
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=518005:518055

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5363653640716288

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.
Labels: -Security_Impact-Beta Security_Impact-None
This is XFA which is not enabled on any branch of Chrome.
Project Member

Comment 5 by ClusterFuzz, Feb 15 2018

ClusterFuzz has detected this issue as fixed in range 536860:536893.

Detailed report: https://clusterfuzz.com/testcase?key=5363653640716288

Fuzzer: afl_pdfium_xfa_fuzzer
Job Type: afl_chrome_asan
Crash Type: Heap-use-after-free READ 1
Crash Address: 0x60c00005cfc0
Crash State:
  fxcrt::UnownedPtr<CXFA_LayoutItem>::ProbeForLowSeverityLifetimeIssue
  CJX_Object::~CJX_Object
  CJX_PageSet::~CJX_PageSet
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=518005:518055
Fixed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=536860:536893

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5363653640716288

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 6 by sheriffbot@chromium.org, May 25 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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