Bug 1641450 (CVE-2017-5733)

Summary: CVE-2017-5733 edk2: Privilege escalation via heap-based buffer overflow in MakeTable() function
Product: [Other] Security Response Reporter: Sam Fowler <sfowler>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: berrange, kraxel, lersek, pbonzini, philmd, virt-maint
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Clone Of: Environment:
Last Closed: 2019-08-06 13:20:13 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1641452, 1641451, 1641453, 1666586    
Bug Blocks: 1641438    

Description Sam Fowler 2018-10-22 06:07:23 UTC
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/show_bug.cgi?id=686

Comment 1 Sam Fowler 2018-10-22 06:08:29 UTC
Created edk2 tracking bugs for this issue:

Affects: epel-all [bug 1641452]
Affects: fedora-all [bug 1641451]

Comment 4 errata-xmlrpc 2019-08-06 12:18:02 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2125 https://access.redhat.com/errata/RHSA-2019:2125

Comment 5 Product Security DevOps Team 2019-08-06 13:20:13 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2017-5733