DEBIAN-CVE-2020-14309

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Source
https://security-tracker.debian.org/tracker/CVE-2020-14309
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-14309.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2020-14309
Upstream
Published
2020-07-30T13:15:10.987Z
Modified
2025-11-19T02:04:29.476130Z
Severity
  • 6.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Debian:11 / grub2

Package

Name
grub2
Purl
pkg:deb/debian/grub2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.04-9

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / grub2

Package

Name
grub2
Purl
pkg:deb/debian/grub2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.04-9

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / grub2

Package

Name
grub2
Purl
pkg:deb/debian/grub2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.04-9

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / grub2

Package

Name
grub2
Purl
pkg:deb/debian/grub2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.04-9

Ecosystem specific 

{
    "urgency": "not yet assigned"
}