Vulnerability in Ellislab Expressionengine
CVE-2017-0897
ExpressionEngine version 2.x < 2.11.8 and version 3.x < 3.5.5 create an object signing token with weak entropy. Successfully guessing the token can lead to remote code execution.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.040 (90.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.040 · newest: 0.040 · change: 0.000
Affected products
- Ellislab Expressionengine — versions Versions before 2.11.8 and 3.5.5
- Expressionengine — versions 2.0.0, 2.0.1, 2.0.2
Weakness classification (CWE)
References
- www.securityfocus.com/bid/99242 (VDB Entry, Third Party Advisory, vdb-entry)
- docs.expressionengine.com/v2/about/changelog.html (Vendor Advisory)
- hackerone.com/reports/215890 (Permissions Required)
- docs.expressionengine.com/latest/about/changelog.html (Vendor Advisory)
- expressionengine.com/blog/expressionengine-3.5.5-and-2.11.8-released (Vendor Advisory)
Frequently asked questions
- What is CVE-2017-0897?
- CVE-2017-0897 is a high-severity vulnerability in Ellislab Expressionengine, classified under Use of Insufficiently Random Values. CVSS score: 7.5/10. Published 2017-06-22.
- How severe is CVE-2017-0897?
- High severity. CVSS v3 base score is 7.5 out of 10.