SB2017060501 - Remote code execution in Document Liberation Project libmwaw

Description

This security bulletin contains information about 1 vulnerability.

1) Buffer overflow (CVE-ID: CVE-2017-9433)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to boundary error with MsWrd1Parser::readFootnoteCorrespondance() function in lib/MsWrd1Parser.cxx. A remote unauthenticated attacker can create a specially crafted MS Word file, trick the victim into opening it using the affected library, trigger heap-based buffer overflow and execute arbitrary code on the target system with privileges of the current user.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1037
• https://sourceforge.net/p/libmwaw/libmwaw/ci/68b3b74569881248bfb6cbb4266177cc253b292f/