CVE-2018-6857

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 0x802022E0. By crafting an input buffer we can control the execution path to the point where the constant 0x12 will be written to a user-controlled address. We can take advantage of this condition to modify the SEP_TOKEN_PRIVILEGES structure of the Token object belonging to the exploit process and grant SE_DEBUG_NAME privilege. This allows the exploit process to interact with higher privileged processes running as SYSTEM and execute code in their security context.
Overview
  • CVE ID
  • CVE-2018-6857
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2018-07-09T18:29:01
  • Last Modified Date
  • 2019-10-03T00:03:26
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
History
Created Old Value New Value Data Type Notes
2022-05-10 07:44:06 Added to TrackCVE
2022-12-03 09:32:33 2018-07-09T18:29Z 2018-07-09T18:29:01 CVE Published Date updated
2022-12-03 09:32:33 2019-10-03T00:03:26 CVE Modified Date updated
2022-12-03 09:32:33 Analyzed Vulnerability Status updated