CVE-2018-6853 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 0x80206024. By crafting an input buffer we can control the execution path to the point where a global variable 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.
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
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| 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] |