Local Privilege Escalation Vulnerability in Sophos SafeGuard Products
CVE-2018-6852

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

Summary

Sophos SafeGuard Enterprise, SafeGuard Easy, and SafeGuard LAN Crypt are susceptible to a local privilege escalation vulnerability that can be exploited via a crafted input buffer. This vulnerability occurs through an IOCTL call (0x80202298), wherein attackers can manipulate the execution flow. By targeting the nt!memset function, they can zero out contents of a user-controlled memory address, which can lead to modification of the security descriptor in an object header of a privileged process. This gives potential for running arbitrary code in the context of a process with SYSTEM-level privileges, effectively compromising the system's security.

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

.