CVE-2018-0421
CVSS V2 Medium 5
CVSS V3 High 8.6
Description
A vulnerability in TCP connection management in Cisco Prime Access Registrar could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition when the application unexpectedly restarts. The vulnerability is due to incorrect handling of incoming TCP SYN packets to specific listening ports. The improper handling of the TCP SYN packets could cause a system file description to be allocated and not freed. An attacker could exploit this vulnerability by sending a crafted stream of TCP SYN packets to the application. A successful exploit could allow the attacker to cause the application to eventually restart if a file description cannot be obtained.
Overview
- CVE ID
- CVE-2018-0421
- Assigner
- ykramarz@cisco.com
- Vulnerability Status
- Modified
- Published Version
- 2018-10-05T14:29:00
- Last Modified Date
- 2019-10-09T23:32:02
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:cisco:prime_access_registrar:*:*:*:*:*:*:*:* | 1 | OR | 7.3 | 7.3.0.4 |
| cpe:2.3:a:cisco:prime_access_registrar:*:*:*:*:*:*:*:* | 1 | OR | 8.0 | 8.0.1.1 |
| cpe:2.3:a:cisco:prime_access_registrar_jumpstart:*:*:*:*:*:*:*:* | 1 | OR | 7.3 | 7.3.0.4 |
| cpe:2.3:a:cisco:prime_access_registrar_jumpstart:*:*:*:*:*:*:*:* | 1 | OR | 8.0 | 8.0.1.1 |
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-20180905-cpar-dos | Vendor Advisory |
| http://www.securitytracker.com/id/1041684 | Third Party Advisory VDB Entry |
| http://www.securityfocus.com/bid/105282 | Third Party Advisory VDB Entry |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2018-0421 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0421 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:07:07 | Added to TrackCVE | |||
| 2022-12-03 12:53:31 | psirt@cisco.com | ykramarz@cisco.com | CVE Assigner | updated |
| 2022-12-03 12:53:31 | 2018-10-05T14:29Z | 2018-10-05T14:29:00 | CVE Published Date | updated |
| 2022-12-03 12:53:31 | 2019-10-09T23:32:02 | CVE Modified Date | updated | |
| 2022-12-03 12:53:31 | Modified | Vulnerability Status | updated |