VULNERABILITY INTELLIGENCE

CVE-2020-14310

CVSS score5.7 MEDIUM
EPSS probability0.46%
CISA KEVNot currently listed
Published2020-07-31
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H

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.

Weakness classification

  • secalert@redhat.com: CWE-122
  • nvd@nist.gov: CWE-190

Primary references