New issue
Advanced search Search tips

Issue 698082 link

Starred by 1 user

Issue metadata

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

Blocking:
issue 62400



Sign in to add a comment

Heap-buffer-overflow in CGifLZWDecoder::ClearTable

Project Member Reported by ClusterFuzz, Mar 2 2017

Issue description

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

Cc: tsepez@chromium.org
Components: Internals>Plugins>PDF
Owner: dsinclair@chromium.org
Status: Assigned (was: Untriaged)
Project Member

Comment 2 by sheriffbot@chromium.org, Mar 3 2017

Labels: M-56
Project Member

Comment 3 by sheriffbot@chromium.org, Mar 3 2017

Labels: Pri-1
Blocking: 62400
Labels: -M-56 -Security_Impact-Stable Security_Impact-None
This is XFA which is not enabled on any branch of Chrome.
Project Member

Comment 5 by ClusterFuzz, May 10 2017

ClusterFuzz has detected this issue as fixed in range 470448:470489.

Detailed report: https://clusterfuzz.com/testcase?key=5803173605539840

Fuzzer: libfuzzer_pdf_codec_gif_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: Heap-buffer-overflow WRITE 1
Crash Address: 0x62a000005232
Crash State:
  CGifLZWDecoder::ClearTable
  CGifLZWDecoder::InitTable
  gif_load_frame
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=470448:470489

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5803173605539840


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 6 by ClusterFuzz, May 10 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 5803173605539840 is verified as fixed, so closing issue.

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

Comment 7 by sheriffbot@chromium.org, May 10 2017

Labels: -Restrict-View-SecurityTeam Restrict-View-SecurityNotify
Owner: npm@chromium.org
https://pdfium.googlesource.com/pdfium/+/808828cb7b5539ab9a3f52b67ada6f26fa3c9d51 either fixed this or moved the problem elsewhere.
Project Member

Comment 9 by sheriffbot@chromium.org, Aug 16 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

Sign in to add a comment