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CVE-2021-1441
CVE ID
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CVE-2021-1441
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 hardware initialization routines of Cisco IOS XE Software for Cisco 1100 Series Industrial Integrated Services Routers and Cisco ESR6300 Embedded Series Routers could allow an authenticated, local attacker to execute unsigned code at system boot time. This vulnerability is due to incorrect validations of parameters passed to a diagnostic script that is executed when the device boots up. An attacker could exploit this vulnerability by tampering with an executable file stored on a device. A successful exploit could allow the attacker to execute unsigned code at boot time and bypass the software image verification check part of the secure boot process of an affected device. To exploit this vulnerability, the attacker would need administrative level credentials (level 15) on the device.
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CVSS V3 Severity and Metrics
General Information
Vendors
- cisco
Products
- ios xe 16.10.1,
- ios xe 16.10.1e,
- ios xe 16.11.1,
- ios xe 16.11.1c,
- ios xe 16.11.1s,
- ios xe 16.12.1,
- ios xe 16.12.1c,
- ios xe 16.12.1s,
- ios xe 16.12.1za,
- ios xe 16.12.2,
- ios xe 16.12.2s,
- ios xe 16.12.2t,
- ios xe 16.12.3,
- ios xe 16.12.3s,
- ios xe 16.12.4,
- ios xe 16.9.1,
- ios xe 16.9.1c,
- 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 17.2.1r,
- ios xe 17.2.1v,
- ios xe 17.2.3,
- ios xe 3.15.1xbs,
- ios xe 3.15.2xbs
References
Additional Info
Technical Analysis
Report as Exploited in the Wild
CVE ID
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