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.
Published: 2020-07-31
Score: 5.7 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-4735-1 grub2 security update
EUVD EUVD EUVD-2020-6462 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.
Ubuntu USN Ubuntu USN USN-4432-1 GRUB 2 vulnerabilities
History

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Subscriptions

Canonical Ubuntu Linux
Gnu Grub2
Opensuse Leap
Redhat Enterprise Linux Enterprise Linux Eus Enterprise Linux Server Aus Enterprise Linux Server Tus Rhel Aus Rhel E4s Rhel Eus Rhel Tus
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-04T12:39:36.404Z

Reserved: 2020-06-17T00:00:00.000Z

Link: CVE-2020-14310

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-07-31T22:15:11.500

Modified: 2024-11-21T05:02:58.777

Link: CVE-2020-14310

cve-icon Redhat

Severity : Moderate

Publid Date: 2020-07-29T17:00:00Z

Links: CVE-2020-14310 - Bugzilla

cve-icon OpenCVE Enrichment

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Weaknesses