PT-2017-16567 · B2Evolution · B2Evolution

Blackwolfsec · Published 2017-01-23 · Updated 2019-10-03 · CVE-2017-5539

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions b2evolution version 6.8.4-stable

Description The issue allows an attacker to bypass a filter rule using ../, enabling them to delete or read any files on the server, as well as determine whether a file exists.

Recommendations For b2evolution version 6.8.4-stable, as a temporary workaround, consider restricting access to sensitive files and directories until a patch is available. Avoid using the ../ sequence in file paths to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2017-5539

Affected Products

B2Evolution

References · 7

• https://github.com/b2evolution/b2evolution/commit/e35f7c195d8c1103d2d981a48cda5ab45ecac48a · Patch
• https://github.com/b2evolution/b2evolution/issues/36 · Patch
• https://osv.dev/vulnerability/CVE-2017-5539 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-5539 · Security Note
• http://b2evolution.net/downloads/6-8-5 · Vendor Advisory
• http://securityfocus.com/bid/95700 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5539 · Note