vulnwire
9.8crit

CVE-2016-2403

Symfony Authentication Bypass

Also known as GHSA-wvj5-r78r-hhfq

Published 9 y ago · modified 4 mo ago · JSON

CVSS
9.8
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
4.3%
percentile 91%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

4.29% probability of exploitation in the next 30 days, higher than 91% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.09.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD2.07.5AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub3.09.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

EcosystemPackageAffectedFixed in
packagistsymfony/security-core
>=2.8.0, <2.8.6
>=3.0.0, <3.0.6
2.8.6
3.0.6
packagistsymfony/security
>=2.8.0, <2.8.6
>=3.0.0, <3.0.6
2.8.6
3.0.6
packagistsymfony/symfony
>=2.8.0, <2.8.6
>=3.0.0, <3.0.6
2.8.6
3.0.6

Classification

Weakness

References

  • symfony.com /blog/cve-2016-2403-unauthorized-access-on-a-misconfigured-ldap-server-when-using-an-empty · x_refsource_CONFIRM, x_transferred
  • debian.org /security/2018/dsa-4262 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • securityfocus.com /bid/96137 · vdb-entry, x_refsource_BID, x_transferred
  • nvd.nist.gov /vuln/detail/CVE-2016-2403 · advisory
  • github.com /FriendsOfPHP/security-advisories/blob/master/symfony/security-core/CVE-2016-2403.yaml · web
  • github.com /FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2016-2403.yaml · web
  • github.com /FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2016-2403.yaml · web
  • symfony.com /cve-2016-2403 · web
  • web.archive.org /web/20210123224944/http://www.securityfocus.com/bid/96137 · web

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.