CVE-2018-6857 Details
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.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://community.sophos.com/kb/en-us/131934 | CVE | PatchVendor Advisory |
| http://seclists.org/fulldisclosure/2018/Jul/20 | CVE | Mailing ListThird Party Advisory |
| https://labs.nettitude.com/blog/cve-2018-6851-to-cve-2018-6857-sophos-privilege-escalation-vulnerabilities/ | CVE | ExploitTechnical DescriptionThird Party Advisory |
| https://community.sophos.com/kb/en-us/131934 | [email protected] | PatchVendor Advisory |
| http://seclists.org/fulldisclosure/2018/Jul/20 | [email protected] | Mailing ListThird Party Advisory |
| https://labs.nettitude.com/blog/cve-2018-6851-to-cve-2018-6857-sophos-privilege-escalation-vulnerabilities/ | [email protected] | ExploitTechnical DescriptionThird Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| sophos safeguard easy device encryption client | 6.00 6.10 7.00 |
CPE
Remediation
| |
| sophos safeguard enterprise client | 5.60.3 vs-nfd 6.00 6.00.1 6.10 7.00 8.00 |
CPE
Remediation
| |
| sophos safeguard lan crypt client | 3.90.1 ts 3.90.2 3.95.1 3.95.1 ts |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Nov 21, 2024 | CVE Modified | CVE |
| May 14, 2024 | CVE Modified | [email protected] |
| Oct 3, 2019 | CWE Remap | [email protected] |
| Sep 7, 2018 | Initial Analysis | [email protected] |