CVE-2017-17023
CVSS V2 High 9.3
CVSS V3 High 8.1
Description
The Sophos UTM VPN endpoint interacts with client software provided by NPC Engineering (www.ncp-e.com). The affected client software, "Sophos IPSec Client" 11.04 is a rebranded version of NCP "Secure Entry Client" 10.11 r32792. A vulnerability in the software update feature of the VPN client allows a man-in-the-middle (MITM) or man-on-the-side (MOTS) attacker to execute arbitrary, malicious software on a target user's computer. This is related to SIC_V11.04-64.exe (Sophos), NCP_EntryCl_Windows_x86_1004_31799.exe (NCP), and ncpmon.exe (both Sophos and NCP). The vulnerability exists because: (1) the VPN client requests update metadata over an insecure HTTP connection; and (2) the client software does not check if the software update is signed before running it.
Overview
- CVE ID
- CVE-2017-17023
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2019-04-09T18:29:00
- Last Modified Date
- 2019-10-03T00:03:26
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:ncp-e:ncp_secure_entry_client:10.11:32792:*:*:*:windows:*:* | 1 | OR | ||
| cpe:2.3:a:sophos:ipsec_client:11.04:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:C/I:C/A:C
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- COMPLETE
- Integrity Impact
- COMPLETE
- Availability Impact
- COMPLETE
- Base Score
- 9.3
- Severity
- HIGH
- Exploitability Score
- 8.6
- Impact Score
- 10
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- HIGH
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 8.1
- Base Severity
- HIGH
- Exploitability Score
- 2.2
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://www.ncp-e.com/fileadmin/pdf/service_support/release_notes/NCP_Secure_Clients/NCP_Secure_Entry_Client/NCP_RN_Win_Secure_Entry_Client_11_14_r42039_en.pdf | Vendor Advisory |
| https://www.ncp-e.com/en/resources/download-vpn-client/#c8680 | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2017-17023 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17023 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:23:52 | Added to TrackCVE | |||
| 2022-12-03 19:23:45 | 2019-04-09T18:29Z | 2019-04-09T18:29:00 | CVE Published Date | updated |
| 2022-12-03 19:23:45 | 2019-10-03T00:03:26 | CVE Modified Date | updated | |
| 2022-12-03 19:23:45 | Analyzed | Vulnerability Status | updated |