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Fencer Vulns
medium 6.5

CVE-2022-41915 json

Netty vulnerable to HTTP Response splitting from assigning header value iterator

published 2022-12-12 3 y ago modified 2026-06-17 4 mo ago also GHSA-hh82-3pmq-7frp , EUVD-2022-7648

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

Netty project is an event-driven asynchronous network application framework. Starting in version 4.1.83.Final and prior to 4.1.86.Final, when calling `DefaultHttpHeadesr.set` with an _iterator_ of values, header value validation was not performed, allowing malicious header values in the iterator to perform HTTP Response Splitting. This issue has been patched in version 4.1.86.Final. Integrators can work around the issue by changing the `DefaultHttpHeaders.set(CharSequence, Iterator<?>)` call, into a `remove()` call, and call `add()` in a loop over the iterator of values.

Patch / fix

  • maven io.netty:netty-codec-http 4.1.86.Final
  • netty netty 4.1.86
  • netty Debian 14, Debian 13, Debian 12 1:4.1.48-6

debian advisories DEBIAN-CVE-2022-41915

  • netty Ubuntu 22.04 LTS 1:4.1.48-4+deb11u1build0.22.04.1
  • netty Ubuntu Pro 16.04 LTS 1:4.0.34-1ubuntu0.1~esm1
  • netty Ubuntu Pro 18.04 LTS 1:4.1.7-4ubuntu0.1+esm2
  • netty Ubuntu Pro 20.04 LTS 1:4.1.45-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2022-41915

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • netty-tcnative SLE Real Time 15 SP3, SLE Module for Development Tools 15 SP5, SLE Module for Development Tools 15 SP4 +11 more 2.0.59-150200.3.10.1
  • netty SLE Module for Package Hub 15 SP5, openSUSE Leap 15.5, openSUSE Leap 15.4 4.1.90-150200.4.14.1

suse advisories SUSE-SU-2023:2096-2SUSE-SU-2023:2096-1

  • netty openSUSE Tumbleweed 4.1.114-1.1

opensuse advisories openSUSE-SU-2024:14442-1

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.95% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/netty/netty/issues/13084 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
maven io.netty:netty-codec-http
>=4.1.83.Final, <4.1.86.Final
4.1.86.Final

Affected products

  • netty netty

Classification

Weakness
  • CWE-436 Interpretation Conflict
  • CWE-113 Improper Neutralization of CRLF Sequences in HTTP Headers

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.