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CVE-2021-3697
CVE ID
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CVE-2021-3697
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
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.
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CVSS V3 Severity and Metrics
General Information
Vendors
- gnu,
- redhat
Products
- codeready linux builder -,
- developer tools 1.0,
- enterprise linux 8.0,
- enterprise linux 8.1,
- enterprise linux 8.4,
- enterprise linux 9.0,
- enterprise linux eus 8.2,
- enterprise linux eus 8.4,
- enterprise linux eus 8.6,
- enterprise linux eus 9.0,
- enterprise linux for power little endian 8.0,
- enterprise linux for power little endian 9.0,
- enterprise linux for power little endian eus 8.2,
- enterprise linux for power little endian eus 8.4,
- enterprise linux for power little endian eus 8.6,
- enterprise linux for power little endian eus 9.0,
- enterprise linux server aus 8.2,
- enterprise linux server aus 8.4,
- enterprise linux server aus 8.6,
- enterprise linux server for power little endian update services for sap solutions 8.1,
- enterprise linux server for power little endian update services for sap solutions 8.2,
- enterprise linux server for power little endian update services for sap solutions 8.4,
- enterprise linux server for power little endian update services for sap solutions 8.6,
- enterprise linux server for power little endian update services for sap solutions 9.0,
- enterprise linux server tus 8.2,
- enterprise linux server tus 8.4,
- enterprise linux server tus 8.6,
- grub2,
- openshift 3.0,
- openshift container platform 4.10,
- openshift container platform 4.6,
- openshift container platform 4.9
References
Miscellaneous
Additional Info
Technical Analysis
Report as Emergent Threat Response
Report as Exploited in the Wild
CVE ID
AttackerKB requires a CVE ID in order to pull vulnerability data and references from the CVE list and the National Vulnerability Database. If available, please supply below:
