Cyber Resilience

CVE-2021-43797

Medium

Published: 09 December 2021

Published
09 December 2021
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
EPSS Score 0.0038 60.0th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-43797 is a medium-severity HTTP Request/Response Smuggling (CWE-444) vulnerability in Oracle Coherence. Its CVSS base score is 6.5 (Medium).

Operationally, ranked in the top 40.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. Netty prior to version 4.1.71.Final skips control chars when they are present at the beginning / end of the header name.…

more

It should instead fail fast as these are not allowed by the spec and could lead to HTTP request smuggling. Failing to do the validation might cause netty to "sanitize" header names before it forward these to another remote system when used as proxy. This remote system can't see the invalid usage anymore, and therefore does not do the validation itself. Users should upgrade to version 4.1.71.Final.

CWE(s)
CWE-444

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

netty
netty
≤ 4.1.71
quarkus
quarkus
≤ 2.5.3
netapp
oncommand workflow automation
all versions
netapp
snapcenter
all versions
oracle
banking deposits and lines of credit servicing
2.7
oracle
banking party management
2.7.0
oracle
banking platform
2.6.2
oracle
coherence
12.2.1.4.0, 14.1.1.0.0
oracle
communications cloud native core binding support function
1.11.0
oracle
communications cloud native core network slice selection function
1.8.0
+8 more product configuration(s) — see NVD for full list

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References