Auth bypass in Sensiolabs Symfony
CVE-2016-2403
Symfony before 2.8.6 and 3.x before 3.0.6 allows remote attackers to bypass authentication by logging in with an empty password and valid username, which triggers an unauthenticated bind.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.043 (91.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.029 · newest: 0.043 · change: +0.014
Affected products
- Sensiolabs Symfony — versions 2.8.0, 2.8.1, 2.8.2
Weakness classification (CWE)
References
- symfony.com/blog/cve-2016-2403-unauthorized-access-on-a-misconfigured-ldap-serv… (Vendor Advisory)
- www.debian.org/security/2018/dsa-4262 (vendor-advisory)
- www.securityfocus.com/bid/96137 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2016-2403?
- CVE-2016-2403 is a critical-severity vulnerability in Sensiolabs Symfony, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-02-07.
- How severe is CVE-2016-2403?
- Critical severity. CVSS v3 base score is 9.8 out of 10.