Privilege escalation in Symantec Encryption Desktop and Symantec Endpoint Encryption - #VU9526
Published: December 4, 2017
Vulnerability identifier: #VU9526
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Broadcom
Affected software:
Symantec Encryption Desktop
Symantec Endpoint Encryption
Symantec Encryption Desktop
Symantec Endpoint Encryption
Detailed vulnerability description
The vulnerability allows a local attacker to gain elevated privileges on the target system.
The weakness exists due to boundary error in a kernel driver, PGPwded.sys, in Symantec Encryption Desktop when processing input/output control requests (IOCTLs). A local attacker can send specially crafted input/output control requests (IOCTLs), trigger memory corruption, attain arbitrary hard disk read and write access at sector level, subsequently infect the target, gain low level persistence (MBR/VBR) and execute arbitrary code in the context of the built-in SYSTEM user account, without requiring a reboot.
Successful exploitation of the vulnerability may result in system compromise.
The weakness exists due to boundary error in a kernel driver, PGPwded.sys, in Symantec Encryption Desktop when processing input/output control requests (IOCTLs). A local attacker can send specially crafted input/output control requests (IOCTLs), trigger memory corruption, attain arbitrary hard disk read and write access at sector level, subsequently infect the target, gain low level persistence (MBR/VBR) and execute arbitrary code in the context of the built-in SYSTEM user account, without requiring a reboot.
Successful exploitation of the vulnerability may result in system compromise.
Remediation
Cybersecurity Help is currently unaware of any solutions addressing the vulnerability.