GHSA-9c3x-r3wp-mgxm — Symfony allows internal address and port enumeration by NoPrivateNetworkHttpClient

Impact

When using the NoPrivateNetworkHttpClient, some internal information is still leaking during host resolution, which leads to possible IP/port enumeration.

Source excerpt · OSV

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

symfony/http-client Packagist

Affected range	Recorded fix
From 4.3.0 before 5.4.47Ecosystem versions	5.4.47
From 6.0.0 before 6.4.15Ecosystem versions	6.4.15
From 7.0.0 before 7.1.8Ecosystem versions	7.1.8

Version evidence: OSV · GHSA-9c3x-r3wp-mgxm

View original version evidence (261 explicit versions)

symfony/symfony Packagist

Affected range	Recorded fix
From 4.3.0 before 5.4.47Ecosystem versions	5.4.47
From 6.0.0 before 6.4.15Ecosystem versions	6.4.15
From 7.0.0 before 7.1.8Ecosystem versions	7.1.8

Version evidence: OSV · GHSA-9c3x-r3wp-mgxm

View original version evidence (306 explicit versions)

Original source description

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.

The fisrt patch for this issue is available here for branch 5.4.

The second one is available here for branch 5.4 also.

Credits

We would like to thank Linus Karlsson and Chris Smith for reporting the issue and Nicolas Grekas for providing the fix.

Set up in your agent.

Investigate in your agent.

Symfony allows internal address and port enumeration by NoPrivateNetworkHttpClient