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Medium

Symfony Denial of Service Via Long Password Hashing

  • Disclosed: 17.05.2022
  • Updated: 11.10.2026 10:22

The Security component in Symfony 2.0.x before 2.0.25, 2.1.x before 2.1.13, 2.2.x before 2.2.9, and 2.3.x before 2.3.6 allows remote attackers to cause a denial of service (CPU consumption) via a long password that triggers an expensive hash computation, as demonstrated by a PBKDF2 computation, a similar issue to CVE-2013-5750.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Composer package symfony/polyfill >= 1.0.0, < 1.10.0 1.10.0
Composer package symfony/security >= 2.0.0, < 2.0.25, >= 2.1.0, < 2.1.13, >= 2.2.0, < 2.2.9, >= 2.3.0, < 2.3.6 2.0.25, 2.1.13, 2.2.9, 2.3.6
Composer package symfony/symfony >= 2.0.0, < 2.0.25, >= 2.1.0, < 2.1.13, >= 2.2.0, < 2.2.9, >= 2.3.0, < 2.3.6 2.0.25, 2.1.13, 2.2.9, 2.3.6

References

CVSS score -
Weakness (CWE)
CWE-789
Platform
Composer
Package
symfony/polyfill, symfony/security, symfony/symfony
Disclosed
17.05.2022
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-cr49-fx2v-9p57 - CC BY 4.0

Vulnerability history: symfony/security

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (17) in the archive
Total entries
17
First → latest
02.2020 05.2022
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 3
  • High 7
  • Medium 6
  • Low 1

Disclosures per year

Severity:
  1. Symfony Incorrect Access Control
    Critical · 9.8 CVE-2017-11365 >= 2.7.30, < 2.7.32, >= 2.8.23, < 2.8.25, >= 3.2.10, < 3.2.12, >= 3.3.3, < 3.3.5 2.7.32, 2.8.25, 3.2.12, 3.3.5
  2. Symfony Denial of Service Via Long Password Hashing this entry
    Medium CVE-2013-5958 >= 2.0.0, < 2.0.25, >= 2.1.0, < 2.1.13, >= 2.2.0, < 2.2.9, >= 2.3.0, < 2.3.6 2.0.25, 2.1.13, 2.2.9, 2.3.6
  3. Symphony Denial of Service Via Overlong Usernames
    High · 7.5 CVE-2016-4423 >= 2.3.0, < 2.3.41, >= 2.4.0, < 2.7.13, >= 2.8.0, < 2.8.6, >= 3.0.0, < 3.0.6 2.3.41, 2.7.13, 2.8.6, 3.0.6
  4. Symfony Cryptographic Vulnerability
    High · 7.5 CVE-2016-1902 >= 2.3.0, < 2.3.37, >= 2.4.0, < 2.6.13, >= 2.7.0, < 2.7.9 2.3.37, 2.6.13, 2.7.9
  5. Symfony Vulnerable to Timing Attack
    High CVE-2015-8125 >= 2.3.0, < 2.3.35, >= 2.4.0, < 2.6.12, >= 2.7.0, < 2.7.7 2.3.35, 2.6.12, 2.7.7
  6. Symfony Authentication Bypass
    Critical · 9.8 CVE-2018-11407 >= 2.8.0, < 2.8.37, >= 3.0.0, < 3.3.17, >= 3.4.0, < 3.4.7, >= 4.0.0, < 4.0.7 2.8.37, 3.3.17, 3.4.7, 4.0.7
  7. Symfony Authentication Bypass
    Critical · 9.8 CVE-2016-2403 >= 2.8.0, < 2.8.6, >= 3.0.0, < 3.0.6 2.8.6, 3.0.6
  8. Symfony Session Fixation Vulnerability
    High · 8.1 CVE-2018-11385 >= 2.7.0, < 2.7.48, >= 2.8.0, < 2.8.41, >= 3.0.0, < 3.3.17, >= 3.4.0, < 3.4.11, >= 4.0.0, < 4.0.11 2.7.48, 2.8.41, 3.3.17, 3.4.11, 4.0.11
  9. Symfony CSRF Token Fixation
    High · 8.8 CVE-2018-11406 >= 2.7.0, < 2.7.48, >= 2.8.0, < 2.8.41, >= 3.0.0, < 3.3.17, >= 3.4.0, < 3.4.11, >= 4.0.0, < 4.0.11 2.7.48, 2.8.41, 3.3.17, 3.4.11, 4.0.11
  10. Firewall configured with unanimous strategy was not actually unanimous in Symfony
    High · 7.6 CVE-2020-5275 >= 4.4.0, < 4.4.7, >= 5.0.0, < 5.0.7 4.4.7, 5.0.7
  11. Improper authentication in Symfony
    High · 7.5 CVE-2019-10911 >= 2.7.0, < 2.7.51, >= 2.8.0, < 2.8.50, >= 3.0.0, < 3.4.26, >= 4.0.0, < 4.1.12, >= 4.2.0, < 4.2.7 2.7.51, 2.8.50, 3.4.26, 4.1.12, 4.2.7

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