CVE-2017-5539

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.

CVSS v3.0 9.1 CRITICAL
CVSS v2.0 9.0 HIGH

9.1^/10

CVSS v3.0 : CRITICAL

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

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

9.0^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 8.5

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/b2evolution/b2evolution/issues/36	Issue Tracking Patch Third Party Advisory
https://github.com/b2evolution/b2evolution/commit/e35f7c195d8c1103d2d981a48cda5ab45ecac48a	Issue Tracking Patch Third Party Advisory
http://b2evolution.net/downloads/6-8-5	Patch Vendor Advisory
http://www.securityfocus.com/bid/95700	Third Party Advisory VDB Entry

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Configurations

Configuration 1 (hide)

cpe:2.3:a:b2evolution:b2evolution:6.8.4:*:*:*:*:*:*:*

Information

Published : 2017-01-22 23:59

Updated : 2019-10-02 17:03

NVD link : CVE-2017-5539

Mitre link : CVE-2017-5539

JSON object : View

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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Products Affected

b2evolution

b2evolution

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