CVE-2018-6851
CVSS V2 High 7.2
CVSS V3 High 7.8
Description
Sophos SafeGuard Enterprise before 8.00.5, SafeGuard Easy before 7.00.3, and SafeGuard LAN Crypt before 3.95.2 are vulnerable to Local Privilege Escalation via IOCTL 0x80206040. By crafting an input buffer we can control the execution path to the point where the constant DWORD 0 will be written to a user-controlled address. We can take advantage of this condition to zero-out the pointer to the security descriptor in the object header of a privileged process or modify the security descriptor itself and run code in the context of a process running as SYSTEM.
Overview
- CVE ID
- CVE-2018-6851
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2018-07-09T18:29:00
- Last Modified Date
- 2019-10-03T00:03:26
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:sophos:safeguard_easy_device_encryption_client:6.00:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:sophos:safeguard_easy_device_encryption_client:6.10:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:sophos:safeguard_easy_device_encryption_client:7.00:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:sophos:safeguard_enterprise_client:5.60.3:vs-nfd:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:sophos:safeguard_enterprise_client:6.00:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:sophos:safeguard_enterprise_client:6.00.1:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:sophos:safeguard_enterprise_client:6.10:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:sophos:safeguard_enterprise_client:7.00:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:sophos:safeguard_enterprise_client:8.00:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:sophos:safeguard_lan_crypt_client:3.90.1:ts:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:sophos:safeguard_lan_crypt_client:3.90.2:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:sophos:safeguard_lan_crypt_client:3.95.1:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:sophos:safeguard_lan_crypt_client:3.95.1:ts:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:L/Au:N/C:C/I:C/A:C
- Access Vector
- LOCAL
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- COMPLETE
- Integrity Impact
- COMPLETE
- Availability Impact
- COMPLETE
- Base Score
- 7.2
- Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 10
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 7.8
- Base Severity
- HIGH
- Exploitability Score
- 1.8
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://labs.nettitude.com/blog/cve-2018-6851-to-cve-2018-6857-sophos-privilege-escalation-vulnerabilities/ | Exploit Technical Description Third Party Advisory |
| https://community.sophos.com/kb/en-us/131934 | Patch Vendor Advisory |
| http://seclists.org/fulldisclosure/2018/Jul/20 | Mailing List Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2018-6851 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6851 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:44:05 | Added to TrackCVE | |||
| 2022-12-03 09:32:15 | 2018-07-09T18:29Z | 2018-07-09T18:29:00 | CVE Published Date | updated |
| 2022-12-03 09:32:15 | 2019-10-03T00:03:26 | CVE Modified Date | updated | |
| 2022-12-03 09:32:15 | Analyzed | Vulnerability Status | updated |