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 0x80206040. By crafting an input buffer we can control the execution path to the point where the constant DWORD 0 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.
Published : 2018-07-09 18:29 Updated : 2019-10-03 00:03
CVSS Score More info
Score 7.2 / 10
A vulnerability exploitable with only local access requires the attacker to have either physical access to the vulnerable system or a local (shell) account. Examples of locally exploitable vulnerabilities are peripheral attacks such as Firewire/USB DMA attacks, and local privilege escalations (e.g., sudo).
Specialized access conditions or extenuating circumstances do not exist. The following are examples:
- The affected product typically requires access to a wide range of systems and users, possibly anonymous and untrusted (e.g., Internet-facing web or mail server).
- The affected configuration is default or ubiquitous.
- The attack can be performed manually and requires little skill or additional information gathering.
- The race condition is a lazy one (i.e., it is technically a race but easily winnable).
Authentication is not required to exploit the vulnerability.
There is total information disclosure, resulting in all system files being revealed. The attacker is able to read all of the system's data (memory, files, etc.)
There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised. The attacker is able to modify any files on the target system.
There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.
|Sophos||Safeguard Easy Device Encryption Client||6.00||cpe:/a:sophos:safeguard_easy_device_encryption_client:6.00|
|Sophos||Safeguard Easy Device Encryption Client||6.10||cpe:/a:sophos:safeguard_easy_device_encryption_client:6.10|
|Sophos||Safeguard Easy Device Encryption Client||7.00||cpe:/a:sophos:safeguard_easy_device_encryption_client:7.00|
|Sophos||Safeguard Enterprise Client||5.60.3||cpe:/a:sophos:safeguard_enterprise_client:5.60.3:vs-nfd|
|Sophos||Safeguard Enterprise Client||6.00||cpe:/a:sophos:safeguard_enterprise_client:6.00|
|Sophos||Safeguard Enterprise Client||6.00.1||cpe:/a:sophos:safeguard_enterprise_client:6.00.1|
|Sophos||Safeguard Enterprise Client||6.10||cpe:/a:sophos:safeguard_enterprise_client:6.10|
|Sophos||Safeguard Enterprise Client||7.00||cpe:/a:sophos:safeguard_enterprise_client:7.00|
|Sophos||Safeguard Enterprise Client||8.00||cpe:/a:sophos:safeguard_enterprise_client:8.00|
|Sophos||Safeguard Lan Crypt Client||3.90.1||cpe:/a:sophos:safeguard_lan_crypt_client:3.90.1:ts|
|Sophos||Safeguard Lan Crypt Client||3.90.2||cpe:/a:sophos:safeguard_lan_crypt_client:3.90.2|
|Sophos||Safeguard Lan Crypt Client||3.95.1||cpe:/a:sophos:safeguard_lan_crypt_client:3.95.1|
|Sophos||Safeguard Lan Crypt Client||3.95.1||cpe:/a:sophos:safeguard_lan_crypt_client:3.95.1:ts|
History of changes