Vulnerability · Published Feb 10, 2025 · Assigned by GitHub_M
CVE-2025-24970SslHandler doesn't correctly validate packets which can lead to native crash when using native SSLEngine
High 7.5
In plain English
A high-severity improper input validation in netty from netty. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.2% (higher than 83% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Netty, an asynchronous, event-driven network application framework, has a vulnerability starting in version 4.1.91.Final and prior to version 4.1.118.Final. When a special crafted packet is received via SslHandler it doesn't correctly handle validation of such a packet in all cases which can lead to a native crash. Version 4.1.118.Final contains a patch. As workaround its possible to either disable the usage of the native SSLEngine or change the code manually.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | io.netty:netty-handler | 4.1.118.Final | GHSA-4g8c-wm8x-jfhw |
| Ubuntu:25.10 | netty | no fix listed | UBUNTU-CVE-2025-24970 |
| Ubuntu:26.10 | netty | no fix listed | UBUNTU-CVE-2025-24970 |
Affected products (as reported)
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/netty/netty/security/advisories/GHSA-4g8c-wm8x-jfhw x_refsource_CONFIRM
- https://github.com/netty/netty/commit/87f40725155b2f89adfde68c7732f97c153676c4 x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20250221-0005/
- https://www.vicarius.io/vsociety/posts/cve-2025-24970-netty-vulnerability-detection
- https://www.vicarius.io/vsociety/posts/cve-2025-24970-netty-vulnerability-mitigation