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Issue metadata

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

Blocking:
issue 62400



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Crash in CXFA_FMStringExpression::ToJavaScript

Project Member Reported by ClusterFuzz, Mar 1 2017

Issue description

Project Member

Comment 1 by sheriffbot@chromium.org, Mar 1 2017

Labels: M-56
Project Member

Comment 2 by sheriffbot@chromium.org, Mar 1 2017

Labels: Pri-1

Comment 3 by vakh@chromium.org, Mar 1 2017

Cc: tsepez@chromium.org
Components: Internals>Plugins>PDF
Owner: dsinclair@chromium.org
Status: Available (was: Untriaged)
Blocking: 62400
Labels: -M-56 -Security_Impact-Stable Security_Impact-None
XFA is not enabled on any branch of chrome.
Project Member

Comment 5 by sheriffbot@chromium.org, Mar 2 2017

Status: Assigned (was: Available)
Project Member

Comment 6 by ClusterFuzz, Apr 29 2017

ClusterFuzz has detected this issue as fixed in range 468180:468207.

Detailed report: https://clusterfuzz.com/testcase?key=5387233202012160

Fuzzer: afl_pdf_fm2js_fuzzer
Job Type: afl_chrome_asan
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x7f2b9a800000
Crash State:
  CXFA_FMStringExpression::ToJavaScript
  CXFA_FMExpExpression::ToImpliedReturnJS
  CXFA_FMFunctionDefinition::ToJavaScript
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=419709:419768
Fixed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=468180:468207

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5387233202012160


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, Apr 29 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 5387233202012160 is verified as fixed, so closing issue.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.
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Comment 8 by sheriffbot@chromium.org, Apr 30 2017

Labels: -Restrict-View-SecurityTeam Restrict-View-SecurityNotify
Cc: thestig@chromium.org
Labels: ClusterFuzz-Wrong
Status: Available (was: Verified)
I'm not sure if we did anything that would fixed this, we should verify.
Project Member

Comment 10 by sheriffbot@chromium.org, May 2 2017

Status: Assigned (was: Available)
Status: WontFix (was: Assigned)
Bulk-WontFixing these bugs. This was a bug on ClusterFuzz side, see bug 717534. We will start seeing new testcases auto-filed in a day or two. We can't leave these open as ClusterFuzz won't autoverify them after ClusterFuzz-Wrong label.
Project Member

Comment 12 by sheriffbot@chromium.org, Aug 9 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
Labels: -ClusterFuzz-Wrong
We have made a bunch of changes on ClusterFuzz side, so resetting ClusterFuzz-Wrong label.

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