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CVE-2021-1390
CVE ID
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CVE-2021-1390
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 one of the diagnostic test CLI commands of Cisco IOS XE Software could allow an authenticated, local attacker to execute arbitrary code on an affected device. To exploit this vulnerability, the attacker would need to have valid user credentials at privilege level 15. This vulnerability exists because the affected software permits modification of the run-time memory of an affected device under specific circumstances. An attacker could exploit this vulnerability by authenticating to the affected device and issuing a specific diagnostic test command at the CLI. A successful exploit could trigger a logic error in the code that was designed to restrict run-time memory modifications. The attacker could take advantage of this logic error to overwrite system memory locations and execute arbitrary code on the underlying Linux operating system (OS) of the affected device.
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CVSS V3 Severity and Metrics
General Information
Vendors
- cisco
Products
- ios xe 16.10.1,
- ios xe 16.10.1a,
- ios xe 16.10.1b,
- ios xe 16.10.1c,
- ios xe 16.10.1d,
- ios xe 16.10.1e,
- ios xe 16.10.1f,
- ios xe 16.10.1g,
- ios xe 16.10.1s,
- ios xe 16.10.2,
- ios xe 16.10.3,
- ios xe 16.11.1,
- ios xe 16.11.1a,
- 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 16.12.1a,
- ios xe 16.12.1c,
- ios xe 16.12.1s,
- ios xe 16.12.1t,
- ios xe 16.12.1w,
- ios xe 16.12.1x,
- ios xe 16.12.1y,
- ios xe 16.12.1z,
- ios xe 16.12.1za,
- ios xe 16.12.2,
- ios xe 16.12.2a,
- 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 16.8.1,
- ios xe 16.8.1a,
- ios xe 16.8.1b,
- ios xe 16.8.1c,
- ios xe 16.8.1d,
- ios xe 16.8.1e,
- ios xe 16.8.1s,
- ios xe 16.8.2,
- ios xe 16.8.3,
- ios xe 16.9.1,
- ios xe 16.9.1a,
- ios xe 16.9.1b,
- ios xe 16.9.1c,
- ios xe 16.9.1d,
- ios xe 16.9.1s,
- ios xe 16.9.2,
- ios xe 16.9.2a,
- ios xe 16.9.2s,
- ios xe 16.9.3,
- ios xe 16.9.3a,
- ios xe 16.9.3h,
- ios xe 16.9.3s,
- ios xe 16.9.4,
- ios xe 16.9.4c,
- ios xe 16.9.5,
- ios xe 16.9.5f,
- ios xe 16.9.6,
- ios xe 17.1.1,
- ios xe 17.1.1a,
- 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 17.2.1r,
- ios xe 17.2.1v,
- ios xe 17.2.2,
- ios xe 17.2.3
References
Additional Info
Technical Analysis
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: