CVE-2020-14309
6.7
MEDIUM
CVSS 3.1
EPSS 0.04%
Description
There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data.
How to fix CVE-2020-14309
To remediate CVE-2020-14309, upgrade the affected package to a fixed version below.
- Alpine/grub—upgrade to 2.06-r0 or later
- —upgrade to 2.04-9 or later
Is CVE-2020-14309 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.06-r0
- from 0, < 2.04-9
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.7 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |