CVE-2017-5539

Severity CVSS v4.0:

Pending analysis

Type:

CWE-22 Path Traversal

Publication date:

23/01/2017

Last modified:

20/04/2025

Description

The patch for directory traversal (CVE-2017-5480) in b2evolution version 6.8.4-stable has a bypass vulnerability. An attacker can use ..\/ to bypass the filter rule. Then, this attacker can exploit this vulnerability to delete or read any files on the server. It can also be used to determine whether a file exists.

Impact

Vector 3.x

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 9.10 CRITICAL
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x

9.10

Severity 3.x

CRITICAL

Vector 2.0

AV:N/AC:L/Au:N/C:C/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 9.00 HIGH
Vector: AV:N/AC:L/Au:N/C:C/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Physical
Availability (A): Physical