CVEvulnerability

CVE-2021-3697

7.0 HIGH Published 2022-07-06 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-07-06
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.0 HIGH — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
4.4 MEDIUM — AV:L/AC:M/Au:N/C:P/I:P/A:P
Weaknesses
CWE-787

Description

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.

Affected configurations

• gnu grub2 (>= 2.00 < 2.12) • redhat developer tools 1.0 • redhat openshift 3.0 • redhat enterprise linux 8.0 • redhat enterprise linux 8.1 • redhat enterprise linux 8.4 • redhat enterprise linux 9.0 • redhat enterprise linux eus 8.2 • redhat enterprise linux eus 8.4 • redhat enterprise linux eus 8.6 • redhat enterprise linux eus 9.0 • redhat enterprise linux for power little endian 8.0 • redhat enterprise linux for power little endian 9.0 • redhat enterprise linux for power little endian eus 8.2 • redhat enterprise linux for power little endian eus 8.4 • redhat enterprise linux for power little endian eus 8.6 • redhat enterprise linux for power little endian eus 9.0 • redhat enterprise linux server aus 8.2 • redhat enterprise linux server aus 8.4 • redhat enterprise linux server aus 8.6 • redhat enterprise linux server for power little endian update services for sap solutions 8.1 • redhat enterprise linux server for power little endian update services for sap solutions 8.2 • redhat enterprise linux server for power little endian update services for sap solutions 8.4 • redhat enterprise linux server for power little endian update services for sap solutions 8.6 • redhat enterprise linux server for power little endian update services for sap solutions 9.0 • redhat enterprise linux server tus 8.2 • redhat enterprise linux server tus 8.4 • redhat enterprise linux server tus 8.6 • redhat openshift container platform 4.6 • redhat openshift container platform 4.9 • redhat openshift container platform 4.10 • redhat codeready linux builder

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References