Local Privilege Escalation in Sophos SafeGuard Enterprise, Easy, and LAN Crypt
CVE-2018-6855

7.8HIGH

Key Information:

Vendor

Sophos
Status
Safeguard Lan Crypt Client
Safeguard Enterprise Client
Safeguard Easy Device Encryption Client
Vendor
CVE Published:
9 July 2018

What is CVE-2018-6855?

Sophos SafeGuard Enterprise, Easy, and LAN Crypt are susceptible to a Local Privilege Escalation vulnerability due to improper handling of IOCTL requests. An attacker can exploit this vulnerability by crafting an input buffer that manipulates the execution flow, ultimately allowing unauthorized modifications to the SEP_TOKEN_PRIVILEGES structure within the process's token object. By doing so, the attacker can grant themselves SE_DEBUG_NAME privileges, enabling interaction with higher privileged processes running under the SYSTEM account, which poses a significant security risk.

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References

https://community.sophos.com/kb/en-us/131934
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http://seclists.org/fulldisclosure/2018/Jul/20
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https://labs.nettitude.com/blog/cve-2018-6851-to-cve-2018...
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CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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