REDHAT-BUG-1641450: Buffer Overflow
First published: Mon 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: <a href="https://edk2-docs.gitbooks.io/security-advisory/content/edk-ii-tianocompress-bounds-checking-issues.html">https://edk2-docs.gitbooks.io/security-advisory/content/edk-ii-tianocompress-bounds-checking-issues.html</a> Upstream Bug: <a href="https://bugzilla.tianocore.org/show_bug.cgi?id=686">https://bugzilla.tianocore.org/show_bug.cgi?id=686</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| TianoCore EDK II |
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Reference Links
- https://edk2-docs.gitbooks.io/security-advisory/content/edk-ii-tianocompress-bounds-checking-issues.html
- https://bugzilla.tianocore.org/show_bug.cgi?id=686
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1641452
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1641451
- https://access.redhat.com/errata/RHSA-2019:2125
- https://access.redhat.com/security/cve/cve-2017-5733
- https://bugzilla.redhat.com/show_bug.cgi?id=1641450
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.
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