CVE-2017-3857
CVSS V2 High 7.8
CVSS V3 High 7.5
Description
A vulnerability in the Layer 2 Tunneling Protocol (L2TP) parsing function of Cisco IOS (12.0 through 12.4 and 15.0 through 15.6) and Cisco IOS XE (3.1 through 3.18) could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to insufficient validation of L2TP packets. An attacker could exploit this vulnerability by sending a crafted L2TP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS or Cisco IOS XE Software if the L2TP feature is enabled for the device and the device is configured as an L2TP Version 2 (L2TPv2) or L2TP Version 3 (L2TPv3) endpoint. By default, the L2TP feature is not enabled. Cisco Bug IDs: CSCuy82078.
Overview
- CVE ID
- CVE-2017-3857
- Assigner
- ykramarz@cisco.com
- Vulnerability Status
- Analyzed
- Published Version
- 2017-03-22T19:59:00
- Last Modified Date
- 2020-07-27T16:59:48
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:* | 1 | OR | 12.0 | 12.4 |
| cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:* | 1 | OR | 15.0 | 15.6 |
| cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:* | 1 | OR | 3.1.0 | 3.18.0 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:N/A:C
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- COMPLETE
- Base Score
- 7.8
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 6.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170322-l2tp | VDB Entry |
| http://www.securityfocus.com/bid/97010 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1038100 | Third Party Advisory VDB Entry |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2017-3857 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-3857 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:39:36 | Added to TrackCVE | |||
| 2022-12-02 15:00:23 | psirt@cisco.com | ykramarz@cisco.com | CVE Assigner | updated |
| 2022-12-02 15:00:23 | 2017-03-22T19:59Z | 2017-03-22T19:59:00 | CVE Published Date | updated |
| 2022-12-02 15:00:23 | 2020-07-27T16:59:48 | CVE Modified Date | updated | |
| 2022-12-02 15:00:23 | Analyzed | Vulnerability Status | updated |