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b2evolution Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) Vulnerability - CVE-2017-5539 - Vulnerability Database
b2evolution

b2evolution Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) Vulnerability - CVE-2017-5539

Critical
Reference: CVE-2017-5539
NVD Link: https://nvd.nist.gov/vuln/detail/CVE-2017-5539
Title: b2evolution Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) Vulnerability
Overview:

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.