Path Traversal in B2evolution
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.042 (90.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.042 · newest: 0.042 · change: 0.000
Affected products
- B2evolution — versions 6.8.4
Weakness classification (CWE)
References
- github.com/b2evolution/b2evolution/commit/e35f7c195d8c1103d2d981a48cda5ab45ecac… (Patch, Third Party Advisory, Issue Tracking)
- b2evolution.net/downloads/6-8-5 (Patch, Vendor Advisory)
- www.securityfocus.com/bid/95700 (VDB Entry, Third Party Advisory, vdb-entry)
- github.com/b2evolution/b2evolution/issues/36 (Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2017-5539?
- CVE-2017-5539 is a critical-severity vulnerability in B2evolution, classified under Path Traversal. CVSS score: 9.1/10. Published 2017-01-23.
- How severe is CVE-2017-5539?
- Critical severity. CVSS v3 base score is 9.1 out of 10.