Bug 2345856 (CVE-2024-45780)

Summary: CVE-2024-45780 grub2: fs/tar: Integer Overflow causes Heap OOB Write
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: security-response-team
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in grub2. When reading tar files, grub2 allocates an internal buffer for the file name. However, it fails to properly verify the allocation against possible integer overflows. It's possible to cause the allocation length to overflow with a crafted tar file, leading to a heap out-of-bounds write. This flaw eventually allows an attacker to circumvent secure boot protections.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Deadline: 2025-02-18   

Description OSIDB Bzimport 2025-02-14 21:27:49 UTC 
When reading tar files, grub2 allocates an internal buffer for the file name however it fails to properly verify the allocation against possible Integer Overflows. It's possible to cause the allocation length to overflow with a crafted tar file leading to a head Out-of-bounds write, as consequence an attacker may leverage this to eventually circumvent secure boot protections.