Alpaquita Linux
Security Advisory

CVE-2020-14310

Published: August 31, 2023Last modified: August 31, 2023

Description

There is an issue on grub2 before version 2.06 at function read_section_as_string(). It expects a font name to be at max UINT32_MAX - 1 length in bytes but it doesn't verify it before proceed with buffer allocation to read the value from the font value. An attacker may leverage that by crafting a malicious font file which has a name with UINT32_MAX, leading to read_section_as_string() to an arithmetic overflow, zero-sized allocation and further heap-based buffer overflow.

Severity score breakdown

ParameterValue
Base score6
Attack VectorLOCAL
Attack complexityLOW
Privileges requiredHIGH
User interactionNONE
ScopeUNCHANGED
ConfidentialityNONE
Integrity impactHIGH
Availability impactHIGH
VectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

Status

ProductReleasePackageStatus
Alpaquita Linux23 LTSgrubNot affected (2.06-r15)
StreamgrubNot affected (2.06-r17)

References

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