CVE-2019-1834
CVSS V2 Low 3.3
CVSS V3 Medium 6.5
Description
A vulnerability in the internal packet processing of Cisco Aironet Series Access Points (APs) could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected AP if the switch interface where the AP is connected has port security configured. The vulnerability exists because the AP forwards some malformed wireless client packets outside of the Control and Provisioning of Wireless Access Points (CAPWAP) tunnel. An attacker could exploit this vulnerability by sending crafted wireless packets to an affected AP. A successful exploit could allow the attacker to trigger a security violation on the adjacent switch port, which could result in a DoS condition. Note: Though the Common Vulnerability Scoring System (CVSS) score corresponds to a High Security Impact Rating (SIR), this vulnerability is considered Medium because a workaround is available and exploitation requires a specific switch configuration. There are workarounds that address this vulnerability.
Overview
- CVE ID
- CVE-2019-1834
- Assigner
- ykramarz@cisco.com
- Vulnerability Status
- Modified
- Published Version
- 2019-04-18T02:29:05
- Last Modified Date
- 2019-10-09T23:48:17
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:cisco:aironet_access_point_firmware:*:*:*:*:*:*:*:* | 1 | OR | 8.5 | 8.5.140.0 |
| cpe:2.3:o:cisco:aironet_access_point_firmware:*:*:*:*:*:*:*:* | 1 | OR | 8.6.101.0 | 8.8.111.0 |
| cpe:2.3:o:cisco:aironet_access_point_firmware:*:*:*:*:*:*:*:* | 1 | OR | 8.8.120.0 | 8.9.100.0 |
| cpe:2.3:h:cisco:aironet_1542d:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:aironet_1542i:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:aironet_1562d:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:aironet_1562e:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:aironet_1562i:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:aironet_1800i:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:aironet_2800e:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:aironet_2800i:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:aironet_3800e:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:aironet_3800i:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:aironet_3800p:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:aironet_access_point_firmware:8.5\(131.0\):*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:aironet_1850e:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:aironet_1850i:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:A/AC:L/Au:N/C:N/I:N/A:P
- Access Vector
- ADJACENT_NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 3.3
- Severity
- LOW
- Exploitability Score
- 6.5
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- ADJACENT_NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 6.5
- Base Severity
- MEDIUM
- Exploitability Score
- 2.8
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-air-ap-dos | Vendor Advisory |
| http://www.securityfocus.com/bid/108000 | Third Party Advisory VDB Entry |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2019-1834 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-1834 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:02:56 | Added to TrackCVE | |||
| 2022-12-03 19:42:38 | psirt@cisco.com | ykramarz@cisco.com | CVE Assigner | updated |
| 2022-12-03 19:42:38 | 2019-04-18T02:29Z | 2019-04-18T02:29:05 | CVE Published Date | updated |
| 2022-12-03 19:42:38 | 2019-10-09T23:48:17 | CVE Modified Date | updated | |
| 2022-12-03 19:42:38 | Modified | Vulnerability Status | updated |