CVE-2019-1806
A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco Small Business Sx200, Sx300, Sx500, ESW2 Series Managed Switches and Small Business Sx250, Sx350, Sx550 Series Switches could allow an authenticated, remote…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.05%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco Small Business Sx200, Sx300, Sx500, ESW2 Series Managed Switches and Small Business Sx250, Sx350, Sx550 Series Switches could allow an authenticated, remote attacker to cause the SNMP application of an affected device to cease processing traffic, resulting in the CPU utilization reaching one hundred percent. Manual intervention may be required before a device resumes normal operations. The vulnerability is due to improper validation of SNMP protocol data units (PDUs) in SNMP packets. An attacker could exploit this vulnerability by sending a malicious SNMP packet to an affected device. A successful exploit could allow the attacker to cause the device to cease forwarding traffic, which could result in a denial of service (DoS) condition. Cisco has released firmware updates that address this vulnerability.
- CVSS 3.1
- 7.7 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- EPSS
- 2.05% probability · 80th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20, CWE-770
- Affected
- cisco/sf200-24 firmware · cisco/sf200-24p firmware · cisco/sf200-48 firmware · cisco/sf200-48p firmware · cisco/sg200-18 firmware · cisco/sg200-26 firmware · cisco/sg200-26p firmware · cisco/sg200-50 firmware · cisco/sg200-50p firmware · cisco/sg300-10 firmware · cisco/sg300-10mp firmware · cisco/sg300-10mpp firmware · cisco/sg300-10sfp firmware · cisco/sg300-10p firmware · cisco/sg300-10pp firmware · cisco/sg300-20 firmware · cisco/sg300-28 firmware · cisco/sg300-28p firmware · cisco/sg300-28pp firmware · cisco/sg300-28mp firmware · +40 more
- Source
- psirt@cisco.com
References
- http://www.securityfocus.com/bid/108335Third Party Advisory, VDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-sb-snmpdosVendor Advisory
- http://www.securityfocus.com/bid/108335Third Party Advisory, VDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-sb-snmpdosVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.