VDB-120952 · CVE-2018-6851 · Qualys 371335

Sophos SafeGuard Enterprise access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Sophos SafeGuard Enterprise, SafeGuard Easy and SafeGuard LAN Crypt. It has been declared as critical. The impacted element is an unknown function. Executing a manipulation can lead to access control. This vulnerability is tracked as CVE-2018-6851. The attack is restricted to local execution. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Sophos SafeGuard Enterprise, SafeGuard Easy and SafeGuard LAN Crypt (version now known). This vulnerability affects some unknown processing. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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 0x80206040. By crafting an input buffer we can control the execution path to the point where the constant DWORD 0 will be written to 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.

The bug was discovered 06/25/2018. The weakness was disclosed 07/09/2018 as confirmed mailinglist post (Full-Disclosure). The advisory is shared for download at seclists.org. This vulnerability was named CVE-2018-6851 since 02/08/2018. The attack needs to be approached locally. Required for exploitation is a single authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability was handled as a non-public zero-day exploit for at least 14 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371335 (Sophos SafeGuard Enterprise Client for Windows Multiple Vulnerabilities).

Upgrading eliminates this vulnerability.

The entries VDB-120953, VDB-120954, VDB-120955 and VDB-120956 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/08/2018 🔍
06/25/2018 +137 days 🔍
07/09/2018 +13 days 🔍
07/09/2018 +0 days 🔍
07/10/2018 +1 days 🔍
03/03/2020 +602 days 🔍

Sourcesinfo

Vendor: sophos.com

Advisory: seclists.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-6851 (🔍)
GCVE (CVE): GCVE-0-2018-6851
GCVE (VulDB): GCVE-100-120952
See also: 🔍

Entryinfo

Created: 07/10/2018 10:03
Updated: 03/03/2020 15:26
Changes: 07/10/2018 10:03 (63), 03/03/2020 15:26 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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