CVE-2018-0369
CVSS V2 Medium 5
CVSS V3 High 8.6
Description
A vulnerability in the reassembly logic for fragmented IPv4 packets of Cisco StarOS running on virtual platforms could allow an unauthenticated, remote attacker to trigger a reload of the npusim process, resulting in a denial of service (DoS) condition. There are four instances of the npusim process running per Service Function (SF) instance, each handling a subset of all traffic flowing across the device. It is possible to trigger a reload of all four instances of the npusim process around the same time. The vulnerability is due to improper handling of fragmented IPv4 packets containing options. An attacker could exploit this vulnerability by sending a malicious IPv4 packet across an affected device. An exploit could allow the attacker to trigger a restart of the npusim process, which will result in all traffic queued toward this instance of the npusim process to be dropped while the process is restarting. The npusim process typically restarts within less than a second. This vulnerability affects: Cisco Virtualized Packet Core-Single Instance (VPC-SI), Cisco Virtualized Packet Core-Distributed Instance (VPC-DI), Cisco Ultra Packet Core (UPC). Cisco Bug IDs: CSCvh29613.
Overview
- CVE ID
- CVE-2018-0369
- Assigner
- ykramarz@cisco.com
- Vulnerability Status
- Modified
- Published Version
- 2018-07-16T17:29:00
- Last Modified Date
- 2019-10-09T23:31:54
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* | 1 | OR | 21.3 | 21.3.15 |
| cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* | 1 | OR | 21.4 | 21.5.7 |
| cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* | 1 | OR | 21.6 | 21.6.4 |
| cpe:2.3:h:cisco:asr_5000:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:asr_5500:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:asr_5700:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 8.6
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 4
References
| Reference URL | Reference Tags |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180711-staros-dos | Vendor Advisory |
| http://www.securityfocus.com/bid/104723 | Third Party Advisory VDB Entry |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2018-0369 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0369 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:07:17 | Added to TrackCVE | |||
| 2022-12-03 09:55:41 | psirt@cisco.com | ykramarz@cisco.com | CVE Assigner | updated |
| 2022-12-03 09:55:41 | 2018-07-16T17:29Z | 2018-07-16T17:29:00 | CVE Published Date | updated |
| 2022-12-03 09:55:41 | 2019-10-09T23:31:54 | CVE Modified Date | updated | |
| 2022-12-03 09:55:41 | Modified | Vulnerability Status | updated |