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CVE-2021-1356
CVE ID
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CVE-2021-1356
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
Multiple vulnerabilities in the web UI of Cisco IOS XE Software could allow an authenticated, remote attacker with read-only privileges to cause the web UI software to become unresponsive and consume vty line instances, resulting in a denial of service (DoS) condition. These vulnerabilities are due to insufficient error handling in the web UI. An attacker could exploit these vulnerabilities by sending crafted HTTP packets to an affected device. A successful exploit could allow the attacker to cause the web UI software to become unresponsive and consume all available vty lines, preventing new session establishment and resulting in a DoS condition. Manual intervention would be required to regain web UI and vty session functionality. Note: These vulnerabilities do not affect the console connection.
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CVSS V3 Severity and Metrics
General Information
Vendors
- cisco
Products
- 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,
- ios xe 3.15.1xbs,
- ios xe 3.15.2xbs
References
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:
