REDHAT-BUG-1641450: Buffer Overflow

Published Oct 22, 2018

Updated

In EDK II, a vulnerability exists in BaseUefiDecompressLib.c, TianoCompress.c, and UEFI specification via a heap-based buffer overflow in the MakeTable() function. An authenticated attacker could exploit this via a crafted file to escalate privileges.

External Reference:

https://edk2-docs.gitbooks.io/security-advisory/content/edk-ii-tianocompress-bounds-checking-issues.html

Upstream Bug:

https://bugzilla.tianocore.org/showbug.cgi?id=686

Affected Software

1 affected component

Tianocore EDK II

Event History

Oct 22, 2018

Data Sourced

via Red Hat·06:07 AM

DescriptionSeverityAffected Software

Frequently Asked Questions

What is the severity of REDHAT-BUG-1641450?

The severity of REDHAT-BUG-1641450 is classified as critical due to the potential for privilege escalation.

How do I fix REDHAT-BUG-1641450?

To fix REDHAT-BUG-1641450, update to the latest version of TianoCore EDK II that addresses this heap-based buffer overflow.

Who can exploit REDHAT-BUG-1641450?

An authenticated attacker can exploit REDHAT-BUG-1641450 by using a crafted file to trigger the vulnerability.

What is the impact of REDHAT-BUG-1641450?

The impact of REDHAT-BUG-1641450 could allow an attacker to escalate their privileges on affected systems.

In which components is REDHAT-BUG-1641450 found?

REDHAT-BUG-1641450 is found in BaseUefiDecompressLib.c and TianoCompress.c of the EDK II components.