Home/CVE/A vulnerability in the internal packet-processing functionality of the Cisco StarOS operating system running on virtual
CVE

CVE-2019-1869

A vulnerability in the internal packet-processing functionality of the Cisco StarOS operating system running on virtual

A vulnerability in the internal packet-processing functionality of the Cisco StarOS operating system running on virtual platforms could allow an unauthenticated, remote attacker to cause an affected device to stop processing traffic, resulting in a denial of service (DoS) condition. The vulnerability is due to a logic error that may occur under specific traffic conditions. An attacker could exploit this vulnerability by sending a series of crafted packets to an affected device.

A successful exploit could allow the attacker to prevent the targeted service interface from receiving any traffic, which would lead to a DoS condition on the affected interface. The device may have to be manually reloaded to recover from exploitation of this vulnerability.

HIGH · CVSS 8.6 EPSS 0.01061
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0

Weakness Classification

Affected Products & Versions

7
cisco staros>= 21.6 and < 21.6.13
cisco staros>= 21.6b and < 21.6b.16
cisco staros>= 21.7 and < 21.7.11
cisco staros>= 21.8 and < 21.8.10
cisco staros>= 21.9 and < 21.9.7
cisco staros>= 21.10 and < 21.10.2
cisco staros>= 21.11 and < 21.11.1

Scoring & Timeline

8.6
HIGH · CVSS v3.0 · psirt@cisco.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD20 Jun 2019 · 03:15 AM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.

Vendor Advisories

1
cisco-csafcisco-sa-20190619-staros-asr-dos
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/108853Third Party AdvisoryVDB Entry
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