CVE-2018-6852
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 Priv…
Published 8 y ago · modified 4 mo ago · JSON
Summary
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 0x80202298. By crafting an input buffer we can control the execution path to the point where the nt!memset function is called to zero out contents of 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.
Exploit prediction (EPSS)
0.61% probability of exploitation in the next 30 days, higher than 50% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| NVD | 3.0 | 7.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
- community.sophos.com /kb/en-us/131934 · x_refsource_CONFIRM, x_transferred
- seclists.org /fulldisclosure/2018/Jul/20 · mailing-list, x_refsource_FULLDISC, x_transferred
- labs.nettitude.com /blog/cve-2018-6851-to-cve-2018-6857-sophos-privilege-escalation-vulnerabilities/ · x_refsource_MISC, x_transferred
Sources
- CVE List: CVE-2018-6852
- NVD: CVE-2018-6852
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