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CVE-2021-1453
CVE ID
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CVE-2021-1453
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 vulnerability in the software image verification functionality of Cisco IOS XE Software for the Cisco Catalyst 9000 Family of switches could allow an unauthenticated, physical attacker to execute unsigned code at system boot time. The vulnerability is due to an improper check in the code function that manages the verification of the digital signatures of system image files during the initial boot process. An attacker could exploit this vulnerability by loading unsigned software on an affected device. A successful exploit could allow the attacker to boot a malicious software image or execute unsigned code and bypass the image verification check part of the secure boot process of an affected device. To exploit this vulnerability, the attacker would need to have unauthenticated physical access to the device or obtain privileged access to the root shell on the device.
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CVSS V3 Severity and Metrics
General Information
Vendors
Products
- ios xe 16.10.1,
- ios xe 16.10.1e,
- ios xe 16.10.1s,
- ios xe 16.11.1,
- ios xe 16.11.1b,
- ios xe 16.11.1c,
- ios xe 16.11.1s,
- ios xe 16.11.2,
- ios xe 16.12.1,
- ios xe 16.12.1c,
- ios xe 16.12.1s,
- ios xe 16.12.2,
- ios xe 16.12.2s,
- ios xe 16.12.2t,
- ios xe 16.12.3,
- ios xe 16.12.3a,
- ios xe 16.12.3s,
- ios xe 16.12.4,
- ios xe 16.12.4a,
- ios xe 16.6.1,
- ios xe 16.6.2,
- ios xe 16.6.3,
- ios xe 16.6.4,
- ios xe 16.6.4a,
- ios xe 16.6.4s,
- ios xe 16.6.5,
- ios xe 16.6.6,
- ios xe 16.6.7,
- ios xe 16.6.8,
- ios xe 16.7.1,
- ios xe 16.8.1,
- ios xe 16.8.1a,
- ios xe 16.8.1s,
- ios xe 16.9.1,
- ios xe 16.9.1s,
- ios xe 16.9.2,
- ios xe 16.9.2s,
- ios xe 16.9.3,
- ios xe 16.9.3s,
- ios xe 16.9.4,
- ios xe 16.9.5,
- ios xe 16.9.6,
- ios xe 17.1.1,
- ios xe 17.1.1s,
- ios xe 17.1.1t,
- ios xe 17.1.2,
- ios xe 17.2.1,
- ios xe 17.2.1a,
- ios xe 17.2.3,
- ios xe 17.3.1,
- ios xe 17.3.2,
- ios xe 17.3.2a,
- ios xe 17.4.1,
- ios xe 3.15.1xbs,
- ios xe 3.15.2xbs
Weaknesses
References
Additional Info
Technical Analysis
Report as Emergent Threat Response
Report as Zero-day Exploit
Report as Exploited in the Wild
CVE ID
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