Vulnerability Details : CVE-2021-43797
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. 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.
Products affected by CVE-2021-43797
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.59:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:banking_platform:2.6.2:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_instant_messaging_server:8.1:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_design_studio:7.4.2:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:coherence:12.2.1.4.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:coherence:14.1.1.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.15.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_unified_data_repository:1.15.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_network_slice_selection_function:1.8.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_security_edge_protection_proxy:1.7.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:banking_party_management:2.7.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:1.11.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:banking_deposits_and_lines_of_credit_servicing:2.7:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:helidon:1.4.10:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:helidon:2.4.0:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*
- cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*
- cpe:2.3:a:quarkus:quarkus:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-43797
0.12%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 29 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-43797
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
2.8
|
3.6
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
2.8
|
3.6
|
GitHub, Inc. |
CWE ids for CVE-2021-43797
-
The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.Assigned by:
- nvd@nist.gov (Secondary)
- security-advisories@github.com (Primary)
References for CVE-2021-43797
-
https://lists.debian.org/debian-lts-announce/2023/01/msg00008.html
[SECURITY] [DLA 3268-1] netty security updateMailing List;Third Party Advisory
-
https://www.oracle.com/security-alerts/cpuapr2022.html
Oracle Critical Patch Update Advisory - April 2022Patch;Third Party Advisory
-
https://github.com/netty/netty/commit/07aa6b5938a8b6ed7a6586e066400e2643897323
Merge pull request from GHSA-wx5j-54mm-rqqq · netty/netty@07aa6b5 · GitHubPatch;Third Party Advisory
-
https://www.debian.org/security/2023/dsa-5316
Debian -- Security Information -- DSA-5316-1 nettyThird Party Advisory
-
https://security.netapp.com/advisory/ntap-20220107-0003/
CVE-2021-43797 Apache Netty Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://github.com/netty/netty/security/advisories/GHSA-wx5j-54mm-rqqq
HTTP fails to validate against control chars in header names which may lead to HTTP request smuggling · Advisory · netty/netty · GitHubThird Party Advisory
-
https://www.oracle.com/security-alerts/cpujul2022.html
Oracle Critical Patch Update Advisory - July 2022Patch;Third Party Advisory
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