CVE-2019-1963
Cisco FXOS and NX-OS Software Authenticated Simple Network Management Protocol Denial of Service Vulnerability
Published 7 y ago · modified 4 mo ago · JSON
Summary
A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco FXOS Software and Cisco NX-OS Software could allow an authenticated, remote attacker to cause the SNMP application on an affected device to restart unexpectedly. The vulnerability is due to improper validation of Abstract Syntax Notation One (ASN.1)-encoded variables in SNMP packets. An attacker could exploit this vulnerability by sending a crafted SNMP packet to the SNMP daemon on the affected device. A successful exploit could allow the attacker to cause the SNMP application to restart multiple times, leading to a system-level restart and a denial of service (DoS) condition.
CISA SSVC assessment
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 23 mo ago
Exploit prediction (EPSS)
1.65% probability of exploitation in the next 30 days, higher than 77% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| CNA | 3.0 | 7.7 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
| CNA | 3.0 | 7.7 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
| NVD | 3.0 | 6.5 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:L/Au:S/C:N/I:N/A:C |
Affected products
- Cisco Cisco Unified Computing System (Managed)
Classification
- Weakness
- CWE-20 Improper Input Validation
References
- tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-20190828-fxnxos-snmp-dos · vendor-advisory, x_refsource_CISCO, x_transferred
Sources
- CVE List: CVE-2019-1963
- NVD: CVE-2019-1963
vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.