Critical severity · published Feb 7, 2017
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…
9.8
CVSS
4.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.3% · higher than 91% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SY
Symfony · Sensiolabs
2.8.0; 2.8.1; 2.8.2; 2.8.3; 2.8.4; 2.8.5; +6 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-2403
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-2403
Vendor Advisory
http://symfony.com/blog/cve-2016-2403-unauthorized-access-on-a-misconfigured-ldap-server-when-using-an-empty-password
Third Party Advisory
http://www.securityfocus.com/bid/96137
www.debian.org
https://www.debian.org/security/2018/dsa-4262
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