CVE-2016-4423
published 2016-06-01CVE-2016-4423: The attemptAuthentication function in Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php in Symfony before 2.3.41, 2.7.x before…
PriorityP337high7.5CVSS 3.0
AVNACLPRNUINSUCNINAH
EPSS
1.86%
76.9th percentile
The attemptAuthentication function in Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php in Symfony before 2.3.41, 2.7.x before 2.7.13, 2.8.x before 2.8.6, and 3.0.x before 3.0.6 does not limit the length of a username stored in a session, which allows remote attackers to cause a denial of service (session storage consumption) via a series of authentication attempts with long, non-existent usernames.
Affected
44 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | symfony | < symfony 2.8.6+dfsg-1 (bookworm) | symfony 2.8.6+dfsg-1 (bookworm) |
| sensiolabs | symfony | <= 2.3.40 | — |
| sensiolabs | symfony | — | — |
| sensiolabs | symfony | — | — |
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CVSS provenance
nvdv3.07.5HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
osv7.5HIGH
vendor_debian7.5HIGH
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Debian
CVE-2016-4423: symfony - The attemptAuthentication function in Component/Security/Http/Firewall/UsernameP...
vendor_debian·2016·CVSS 7.5
CVE-2016-4423 [HIGH] CVE-2016-4423: symfony - The attemptAuthentication function in Component/Security/Http/Firewall/UsernameP...
The attemptAuthentication function in Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php in Symfony before 2.3.41, 2.7.x before 2.7.13, 2.8.x before 2.8.6, and 3.0.x before 3.0.6 does not limit the length of a username stored in a session, which allows remote attackers to cause a denial of service (session storage consumption) via a series of authentication attempts with long, non-existent usernames.
Scope: local
bookworm: resolved (fixed in 2.8.6+dfsg-1)
bullseye: resolved (fixed in 2.8.6+dfsg-1)
forky: resolved (fixed in 2.8.6+dfsg-1)
sid: resolved (fixed in 2.8.6+dfsg-1)
trixie: resolved (fixed in 2.8.6+dfsg-1)
OSV
Symphony Denial of Service Via Overlong Usernames
osv·2022-05-17
CVE-2016-4423 [HIGH] Symphony Denial of Service Via Overlong Usernames
Symphony Denial of Service Via Overlong Usernames
The attemptAuthentication function in `Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php` in Symfony before 2.3.41, 2.7.x before 2.7.13, 2.8.x before 2.8.6, and 3.0.x before 3.0.6 does not limit the length of a username stored in a session, which allows remote attackers to cause a denial of service (session storage consumption) via a series of authentication attempts with long, non-existent usernames.
GHSA
Symphony Denial of Service Via Overlong Usernames
ghsa·2022-05-17
CVE-2016-4423 [HIGH] Symphony Denial of Service Via Overlong Usernames
Symphony Denial of Service Via Overlong Usernames
The attemptAuthentication function in `Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php` in Symfony before 2.3.41, 2.7.x before 2.7.13, 2.8.x before 2.8.6, and 3.0.x before 3.0.6 does not limit the length of a username stored in a session, which allows remote attackers to cause a denial of service (session storage consumption) via a series of authentication attempts with long, non-existent usernames.
OSV
CVE-2016-4423: The attemptAuthentication function in Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener
osv·2016-06-01·CVSS 7.5
CVE-2016-4423 [HIGH] CVE-2016-4423: The attemptAuthentication function in Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener
The attemptAuthentication function in Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php in Symfony before 2.3.41, 2.7.x before 2.7.13, 2.8.x before 2.8.6, and 3.0.x before 3.0.6 does not limit the length of a username stored in a session, which allows remote attackers to cause a denial of service (session storage consumption) via a series of authentication attempts with long, non-existent usernames.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2016-4423 php-symfony: Large username storage in session
bugzilla·2016-05-30·CVSS 7.5
CVE-2016-4423 [HIGH] CVE-2016-4423 php-symfony: Large username storage in session
CVE-2016-4423 php-symfony: Large username storage in session
When an authentication form is submitted by the user and if the user does not exist, the submitted username is stored in the session. If an attacker submit multiple requests with large usernames, he can potentially fill up the session storage.
External references:
https://symfony.com/blog/cve-2016-4423-large-username-storage-in-session
Discussion:
Created php-symfony tracking bugs for this issue:
Affects: epel-all [bug 1340834]
Affects: fedora-all [bug 1340835]
---
All dependent bugs closed.
Bugzilla
CVE-2016-4423 php-symfony: Large username storage in session [epel-all]
bugzilla·2016-05-30·CVSS 7.5
CVE-2016-4423 [HIGH] CVE-2016-4423 php-symfony: Large username storage in session [epel-all]
CVE-2016-4423 php-symfony: Large username storage in session [epel-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora EPEL.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions of F
Bugzilla
CVE-2016-4423 php-symfony: Large username storage in session [fedora-all]
bugzilla·2016-05-30·CVSS 7.5
CVE-2016-4423 [HIGH] CVE-2016-4423 php-symfony: Large username storage in session [fedora-all]
CVE-2016-4423 php-symfony: Large username storage in session [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions of Fedo
http://www.debian.org/security/2016/dsa-3588https://github.com/symfony/symfony/pull/18733https://symfony.com/blog/cve-2016-4423-large-username-storage-in-sessionhttp://www.debian.org/security/2016/dsa-3588https://github.com/symfony/symfony/pull/18733https://symfony.com/blog/cve-2016-4423-large-username-storage-in-session
2016-06-01
Published