CVE-2018-6856

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 0x8020601C. 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.

Link	Resource
https://labs.nettitude.com/blog/cve-2018-6851-to-cve-2018-6857-sophos-privilege-escalation-vulnerabilities/	Exploit Technical Description
https://community.sophos.com/kb/en-us/131934	Patch Vendor Advisory
http://seclists.org/fulldisclosure/2018/Jul/20	Mailing List Third Party Advisory

Configuration 1

cpe:2.3:a:sophos:safeguard_lan_crypt_client:3.95.1:*:*:*:*:*:*:* cpe:2.3:a:sophos:safeguard_lan_crypt_client:3.90.2:*:*:*:*:*:*:* cpe:2.3:a:sophos:safeguard_enterprise_client:8.00:*:*:*:*:*:*:* cpe:2.3:a:sophos:safeguard_enterprise_client:7.00:*:*:*:*:*:*:* cpe:2.3:a:sophos:safeguard_enterprise_client:6.10:*:*:*:*:*:*:* cpe:2.3:a:sophos:safeguard_enterprise_client:6.00:*:*:*:*:*:*:* cpe:2.3:a:sophos:safeguard_enterprise_client:6.00.1:*:*:*:*:*:*:* cpe:2.3:a:sophos:safeguard_easy_device_encryption_client:6.00:*:*:*:*:*:*:* cpe:2.3:a:sophos:safeguard_easy_device_encryption_client:6.10:*:*:*:*:*:*:* cpe:2.3:a:sophos:safeguard_easy_device_encryption_client:7.00:*:*:*:*:*:*:* cpe:2.3:a:sophos:safeguard_lan_crypt_client:3.95.1:ts:*:*:*:*:*:* cpe:2.3:a:sophos:safeguard_lan_crypt_client:3.90.1:ts:*:*:*:*:*:* cpe:2.3:a:sophos:safeguard_enterprise_client:5.60.3:vs-nfd:*:*:*:*:*:*

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Published : 2018-07-09 06:29

Updated : 2019-10-03 12:03

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NVD link : CVE-2018-6856

Mitre link : CVE-2018-6856

No products.

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer