CVE-2024-50342
Symfony allows internal address and port enumeration by NoPrivateNetworkHttpClient
Description
symfony/http-client is a module for the Symphony PHP framework which provides powerful methods to fetch HTTP resources synchronously or asynchronously. When using the `NoPrivateNetworkHttpClient`, some internal information is still leaking during host resolution, which leads to possible IP/port enumeration. As of versions 5.4.46, 6.4.14, and 7.1.7 the `NoPrivateNetworkHttpClient` now filters blocked IPs earlier to prevent such leaks. All users are advised to upgrade. There are no known workarounds for this vulnerability.
How to fix CVE-2024-50342
To remediate CVE-2024-50342, upgrade the affected package to a fixed version below.
- —upgrade to 5.4.23+dfsg-1+deb12u3 or later
- —upgrade to 5.4.47 or later
- —upgrade to 5.4.47 or later
Is CVE-2024-50342 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 5.4.23+dfsg-1+deb12u3
- >= 4.3.0, < 5.4.47
- >= 4.3.0, < 5.4.47
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | LOW3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N |