A crafted 16-bit grayscale PNG image may lead to a out-of-bounds write in the heap area. An attacker may take advantage of that to cause heap data corruption or eventually arbitrary code execution and circumvent secure boot protections. This issue has a high complexity to be exploited as an attacker needs to perform some triage over the heap layout to achieve signifcant results, also the values written into the memory are repeated three times in a row making difficult to produce valid payloads. This flaw affects grub2 versions prior grub-2.12.
References
| Link | Resource |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1991685 | 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
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History
No history.
Information
Published : 2022-07-06 16:15
Updated : 2023-09-13 16:15
NVD link : CVE-2021-3695
Mitre link : CVE-2021-3695
CVE.ORG link : CVE-2021-3695
JSON object : View
Products Affected
redhat
- openshift
- enterprise_linux_server_aus
- developer_tools
- codeready_linux_builder
- enterprise_linux_eus
- enterprise_linux_for_power_little_endian_eus
- enterprise_linux
- enterprise_linux_for_power_little_endian
- openshift_container_platform
- enterprise_linux_server_tus
- enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions
fedoraproject
- fedora
gnu
- grub2
netapp
- ontap_select_deploy_administration_utility
CWE
CWE-787
Out-of-bounds Write