Affected versions
Symfony versions <5.4.46; >=6, <6.4.14; >=7, <7.1.7 of the Symfony HttpClient component are affected by this security issue.
The issue has been fixed in Symfony 5.4.46, 6.4.14, and 7.1.7.
Description
When using the NoPrivateNetworkHttpClient
, some internal information is still leaking during host resolution, which leads to possible IP/port enumeration.
Resolution
The NoPrivateNetworkHttpClient
now filters blocked IPs earlier to prevent such leaks.