DEBIAN-CVE-2021-3697

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Source
https://security-tracker.debian.org/tracker/CVE-2021-3697
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-3697.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2021-3697
Upstream
Published
2022-07-06T16:15:08Z
Modified
2025-09-30T05:15:12.373902Z
Severity
  • 7.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.

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
2.06-3~deb11u1

Affected versions

2.*

2.04-20
2.06-1
2.06-2
2.06-2+hurd.1
2.06-2+hurd.2
2.06-2+hurd.3
2.06-2+hurd.4
2.06-2+hurd.5
2.06-2+hurd.6
2.06-2+hurd.7
2.06-2+hurd.8
2.06-3~deb10u1
2.06-3~deb10u2
2.06-3~deb10u3
2.06-3~deb10u4

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
2.06-3

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
2.06-3

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
2.06-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}