CVE-2021-3697

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.

CVSS v3.0 7.0 HIGH
CVSS v2.0 4.4 MEDIUM

7.0^/10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.0 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.4^/10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:L/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 3.4 / Impact : 6.4

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1991687	Issue Tracking Third Party Advisory
https://security.gentoo.org/glsa/202209-12	Third Party Advisory
https://security.netapp.com/advisory/ntap-20220930-0001/	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:grub:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:a:redhat:openshift:3.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
	cpe:2.3:a:redhat:developer_tools:1.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:8.1:::::::*
	cpe:2.3:o:redhat:enterprise_linux_eus:8.2:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:::::::*
	cpe:2.3:o:redhat:enterprise_linux_eus:8.4:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:::::::*
	cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.2:::::::*
	cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.1:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.2:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.4:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_aus:8.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_eus:8.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:8.4:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:9.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_eus:9.0:::::::*

Configuration 3 (hide)

AND

OR	cpe:2.3:a:redhat:openshift_container_platform:4.6:::::::*
	cpe:2.3:a:redhat:openshift_container_platform:4.9:::::::*
	cpe:2.3:a:redhat:openshift_container_platform:4.10:::::::*

cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

Configuration 4 (hide)

AND

cpe:2.3:a:redhat:codeready_linux_builder:-:*:*:*:*:*:*:*

OR	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_eus:8.2:::::::*
	cpe:2.3:o:redhat:enterprise_linux_eus:8.4:::::::*
	cpe:2.3:o:redhat:enterprise_linux_eus:8.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_eus:9.0:::::::*

Information

Published : 2022-07-06 09:15

Updated : 2023-02-23 09:19

NVD link : CVE-2021-3697

Mitre link : CVE-2021-3697

JSON object : View

CWE

CWE-787

Out-of-bounds Write

Products Affected

redhat

enterprise_linux_for_power_little_endian
developer_tools
enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions
enterprise_linux
enterprise_linux_server_aus
codeready_linux_builder
enterprise_linux_server_tus
openshift
openshift_container_platform
enterprise_linux_for_power_little_endian_eus
enterprise_linux_eus

gnu

grub

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This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-787"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-3697", "ASSIGNER": "secalert@redhat.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 4.4, "accessVector": "LOCAL", "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 6.4, "obtainAllPrivilege": false, "exploitabilityScore": 3.4, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.0, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", 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7.0 /10