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zdiMehmet INCE (@mdisec)ZDI-20-676
HistoryMay 27, 2020 - 12:00 a.m.

Trend Micro InterScan Web Security Virtual Appliance Command Injection Remote Code Execution Vulnerability

2020-05-2700:00:00
Mehmet INCE (@mdisec)
www.zerodayinitiative.com
11

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

6.5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:P/A:P

0.967 High

EPSS

Percentile

99.6%

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Trend Micro InterScan Web Security Virtual Appliance. Authentication is required to exploit this vulnerability. The specific flaw exists within the LogSettingHandler class. When parsing the mount_device parameter, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root.

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

6.5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:P/A:P

0.967 High

EPSS

Percentile

99.6%

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