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 0x80202014. By crafting an input buffer we can control the execution path to the point where the constant 0xFFFFFFF 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.
References
| Link | Resource |
|---|---|
| http://seclists.org/fulldisclosure/2018/Jul/20 | Issue Tracking Mailing List Third Party Advisory |
| https://community.sophos.com/kb/en-us/131934 | Patch Vendor Advisory |
| https://labs.nettitude.com/blog/cve-2018-6851-to-cve-2018-6857-sophos-privilege-escalation-vulnerabilities/ | Exploit Technical Description Third Party Advisory |
Configurations
Configuration 1 (hide)
|
History
No history.
Information
Published : 2018-07-09 18:29
Updated : 2024-02-04 19:46
NVD link : CVE-2018-6855
Mitre link : CVE-2018-6855
CVE.ORG link : CVE-2018-6855
JSON object : View
Products Affected
sophos
- safeguard_lan_crypt_client
- safeguard_enterprise_client
- safeguard_easy_device_encryption_client
CWE
CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer