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Fencer Intel
high 7.5

CVE-2015-8125 json

Symfony Vulnerable to Timing Attack

published 10y ago modified 4mo ago also GHSA-g97c-jfx6-xvxh , EUVD-2022-3930

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.5%
EPSS 2.5% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

Symfony 2.3.x before 2.3.35, 2.6.x before 2.6.12, and 2.7.x before 2.7.7 might allow remote attackers to have unspecified impact via a timing attack involving the (1) Symfony/Component/Security/Http/RememberMe/PersistentTokenBasedRememberMeServices or (2) Symfony/Component/Security/Http/Firewall/DigestAuthenticationListener class in the Symfony Security Component, or (3) legacy CSRF implementation from the Symfony/Component/Form/Extension/Csrf/CsrfProvider/DefaultCsrfProvider class in the Symfony Form component.

Patch / fix

  • packagist symfony/symfony 2.3.35, 2.6.12, 2.7.7
  • packagist symfony/form 2.3.35, 2.6.12, 2.7.7
  • packagist symfony/security-http 2.6.12, 2.7.7
  • packagist symfony/security 2.3.35, 2.6.12, 2.7.7
  • symfony Debian 14, Debian 13, Debian 12 2.7.7+dfsg-1

debian advisories DEBIAN-CVE-2015-8125

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2015-8125 updated cvss 5.8

php-symfony: Session fixation and remote timing attack vulnerabilities

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.55% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected packages

ecosystem package affected fixed in
packagist symfony/symfony
>=2.3.0, <2.3.35
>=2.7.0, <2.7.7
>=2.4.0, <2.6.12
2.3.35
2.7.7
2.6.12
packagist symfony/form
>=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
packagist symfony/security-http
>=2.4.0, <2.6.12
>=2.7.0, <2.7.7
2.6.12
2.7.7
packagist symfony/security
>=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

Classification

Weakness
  • CWE-208 Observable Timing Discrepancy

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.