VDB
CVE-2021-21409
CVE-2021-21409
PUBLISHED
Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty (io.netty:netty-codec-http2) before version 4.1.61.Final there is a vulnerability that enables request smuggling. The content-length header is not correctly validated if the request only uses a single Http2HeaderFrame with the endStream set to to true. This could lead to request smuggling if the request is proxied to a remote peer and translated to HTTP/1.1. This is a followup of GHSA-wm47-8v5p-wjpj/CVE-2021-21295 which did miss to fix this one case. This was fixed as part of 4.1.61.Final.
EPSS 2.55% · 85.8th percentile
Risk Scores
EPSS Score
2.55%
85.8th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:Pro:16.04:LTS | netty | 0, 1:3.2.6.Final-2, 1:4.0.32-1 |
| Ubuntu:Pro:18.04:LTS | netty | 1:4.1.7-4ubuntu0.1, *, 0 |
| Ubuntu:Pro:20.04:LTS | netty | 1:4.1.33-1, 1:4.1.33-2, 1:4.1.33-3 |
| Ubuntu:22.04:LTS | netty | 1:4.1.48-4, 0 |
| Ubuntu:Pro:14.04:LTS | netty | 1:3.2.6.Final-2, 0, 1:3.2.6.Final-2+deb8u2build0.14.04.1~esm1 |
Exploit Intelligence
- dependency-check-suppression.xml (github-poc)
- dependency-check-suppression.xml (github-poc)
- dependency-check-suppression.xml (github-poc)
- dependency-check-suppression.xml (github-poc)
- dependency-check-suppression.xml (github-poc)
- dependency-check-suppression.xml (github-poc)
- dependency-check-suppression.xml (github-poc)
- dependency-check-suppression.xml (github-poc)
- dependency-check-suppression.xml (github-poc)
Timeline
- CVE Published
- Apr 14, 2021 EPSS Score
- Apr 20, 2021 EPSS Score
- May 11, 2021 EPSS Score
- May 18, 2021 EPSS Score
- Jul 28, 2021 EPSS Score
- Sep 8, 2021 EPSS Score
- Sep 23, 2021 EPSS Score
- Sep 24, 2021 EPSS Score
- Oct 10, 2021 EPSS Score
- Oct 21, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2021-21409 third-party-advisory
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21295 third-party-advisory
- https://github.com/netty/netty/commit/b0fa4d5aab4215f3c22ce6123dd8dd5f38dc0432 third-party-advisory
- https://github.com/netty/netty/security/advisories/GHSA-f256-j965-7f32 third-party-advisory
- https://github.com/netty/netty/security/advisories/GHSA-wm47-8v5p-wjpj third-party-advisory
- https://ubuntu.com/security/notices/USN-6049-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2021-21409 third-party-advisory
- Multiples vulnérabilités dans les produits Splunk advisory