LibreOffice 5.4.5.1 6.x CVE-2018-10119 Denial of Service

Authors:ClusterFuzz            Risk:High
 
CVE:CVE-2018-10119            0day:Denial of Service 

0day-id:0DAY-10119             Date:2018-04-16

Description

sot/source/sdstor/stgstrms.cxx in LibreOffice before 5.4.5.1 and 6.x before 6.0.1.1 uses an incorrect integer data type in the StgSmallStrm class, which allows remote attackers to cause a denial of service (use-after-free with write access) or possibly have unspecified other impact via a crafted document.

Analysis

libreoffice/olefuzzer: Heap-use-after-free in StgDataStrm::Read

Detailed report: https://oss-fuzz.com/testcase?key=5099622398689280

Project: libreoffice
Fuzzer: libFuzzer_libreoffice_olefuzzer
Fuzz target binary: olefuzzer
Job Type: libfuzzer_asan_libreoffice
Platform Id: linux

Crash Type: Heap-use-after-free WRITE 1
Crash Address: 0x631000430800
Crash State:
  StgDataStrm::Read
  StgSmallStrm::Read
  StgDirEntry::Read
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_asan_libreoffice&range=201703141338:201703141931

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5099622398689280

Issue filed automatically.

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for more information.

This bug is subject to a 90 day disclosure deadline. If 90 days elapse
without an upstream patch, then the bug report will automatically
become visible to the public.

When you fix this bug, please
  * mention the fix revision(s).
  * state whether the bug was a short-lived regression or an old bug in any stable releases.
  * add any other useful information.
This information can help downstream consumers.

If you have questions for the OSS-Fuzz team, please file an issue at https://github.com/google/oss-fuzz/issues.

FIX

ClusterFuzz has detected this issue as fixed in range 201801280621:201801290617.

ClusterFuzz has detected this issue as fixed in range 201801280621:201801290617.

Detailed report: https://oss-fuzz.com/testcase?key=5099622398689280

Project: libreoffice
Fuzzer: libFuzzer_libreoffice_olefuzzer
Fuzz target binary: olefuzzer
Job Type: libfuzzer_asan_libreoffice
Platform Id: linux

Crash Type: Heap-use-after-free WRITE 1
Crash Address: 0x631000430800
Crash State:
  StgDataStrm::Read
  StgSmallStrm::Read
  StgDirEntry::Read
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_asan_libreoffice&range=201703141338:201703141931
Fixed: https://oss-fuzz.com/revisions?job=libfuzzer_asan_libreoffice&range=201801280621:201801290617

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5099622398689280

See https://github.com/google/oss-fuzz/blob/master/docs/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.

 

 

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