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CVE-2019-1963

UnknownEPSS 1.63%

Last modified

CVE-2019-1963 is a vulnerability of currently unknown severity. 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. EPSS estimates a 1.63% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
1.63%

73.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoNx-Os>= 5.2, < 6.2\(29\)
CiscoNx-Os>= 7.3, < 8.4
CiscoNx-Os< 13.2\(7k\)
CiscoNx-Os>= 14.0, < 14.0\(2c\)
CiscoNx-Os>= 14.1, < 14.1\(1i\)
CiscoNx-Os>= 7.0\(3\)f, < 9.2\(3\)
CiscoNx-Os< 7.1\(5\)n1\(1b\)
CiscoNx-Os>= 7.3, < 7.3\(5\)n1\(1\)
CiscoNx-Os< 6.2\(22\)
CiscoNx-Os>= 7.2, < 7.2\(0\)d1\(1\)
CiscoNx-Os>= 8.0, < 8.2\(3\)
CiscoNx-Os>= 8.3, < 8.3\(2\)
CiscoFx-Os< 2.2.2.91
CiscoFx-Os>= 2.3, < 2.3.1.130
CiscoFx-Os>= 2.4, < 2.4.1.222
CiscoNx-Os>= 14.1, <= 14.1\(1i\)
CiscoNx-Os< 5.2\(1\)sv3\(4.1a\)
CiscoNx-Os< 5.2
CiscoNx-Os>= 5.2, < 5.2\(1\)sv5\(1.2\)
CiscoNx-Os>= 7.0\(3\)i4, < 7.0\(3\)i4\(9\)
CiscoNx-Os>= 7.0\(3\)i7, < 7.0\(3\)i7\(6\)
CiscoNx-Os>= 9.2, < 9.2\(3\)

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-1963?
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.
How severe is CVE-2019-1963?
Severity scoring for CVE-2019-1963 is pending analysis. The EPSS model estimates a 1.63% probability of exploitation in the next 30 days.
How do I fix CVE-2019-1963?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-1963?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST