Vulnerability Monitor

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CVE-2018-6855


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.


Published

2018-07-09T18:29:00.903

Last Modified

2024-11-21T04:11:18.037

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 7.8 (HIGH)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

  • Access Vector: LOCAL
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: COMPLETE
  • Integrity Impact: COMPLETE
  • Availability Impact: COMPLETE
Exploitability Score

3.9

Impact Score

10.0

Weaknesses
  • Type: Primary
    CWE-119

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application sophos safeguard_easy_device_encryption_client 6.00 Yes
Application sophos safeguard_easy_device_encryption_client 6.10 Yes
Application sophos safeguard_easy_device_encryption_client 7.00 Yes
Application sophos safeguard_enterprise_client 5.60.3 Yes
Application sophos safeguard_enterprise_client 6.00 Yes
Application sophos safeguard_enterprise_client 6.00.1 Yes
Application sophos safeguard_enterprise_client 6.10 Yes
Application sophos safeguard_enterprise_client 7.00 Yes
Application sophos safeguard_enterprise_client 8.00 Yes
Application sophos safeguard_lan_crypt_client 3.90.1 Yes
Application sophos safeguard_lan_crypt_client 3.90.2 Yes
Application sophos safeguard_lan_crypt_client 3.95.1 Yes
Application sophos safeguard_lan_crypt_client 3.95.1 Yes

References