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.

Remediation

References

CVE-2017-5539

Related Vulnerabilities

OpenSSL Improper Certificate Validation Vulnerability (CVE-2019-1552)

Oracle Application Server Other Vulnerability (CVE-2005-3446)

Contao Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2019-10642)

Dot CMS Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2016-3688)

MySQL Other Vulnerability (CVE-2010-3680)

Severity

Critical

Classification

CVE-2017-5539 CWE-22 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Tags

Missing Update Known Vulnerabilities