SB2017012324 - Path traversal in b2evolution.net b2evolution
Published: January 23, 2017 Updated: August 8, 2020
Security Bulletin ID
SB2017012324
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Path traversal (CVE-ID: CVE-2017-5539)
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
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
Install update from vendor's website.