CVE-2021-37137

netty-codec: SnappyFrameDecoder doesn't restrict chunk length and may buffer skippable chunks in an unnecessary way

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The Snappy frame decoder function doesn't restrict the chunk length which may lead to excessive memory usage. Beside this it also may buffer reserved skippable chunks until the whole chunk was received which may lead to excessive memory usage as well. This vulnerability can be triggered by supplying malicious input that decompresses to a very big size (via a network stream or a file) or by sending a huge skippable chunk.

La función Snappy frame decoder no restringe la longitud de los trozos, lo que puede conllevar a un uso excesivo de memoria. Además, también puede almacenar en el búfer trozos omitibles reservados hasta que se reciba el trozo completo, lo que también puede conllevar a un uso excesivo de memoria. Esta vulnerabilidad puede desencadenarse al suministrar una entrada maliciosa que se descomprime a un tamaño muy grande (por medio de un flujo de red o un archivo) o mediante el envío de un trozo omitido enorme

A flaw was found in the Netty's netty-codec due to unrestricted chunk lengths in the SnappyFrameDecoder. By sending a specially-crafted input, a remote attacker could cause excessive memory usage resulting in a denial of service.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-07-20 CVE Reserved
2021-10-19 CVE Published
2024-08-04 CVE Updated
2024-11-21 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-400: Uncontrolled Resource Consumption

CAPEC

References (15)

URL	Tag	Source
https://github.com/netty/netty/security/advisories/GHSA-9vjp-v76f-g363	Third Party Advisory
https://lists.apache.org/thread.html/r06a145c9bd41a7344da242cef07977b24abe3349161ede948e30913d%40%3Ccommits.druid.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/r5406eaf3b07577d233b9f07cfc8f26e28369e6bab5edfcab41f28abb%40%3Ccommits.druid.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/r5e05eba32476c580412f9fbdfc9b8782d5b40558018ac4ac07192a04%40%3Ccommits.druid.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/r75490c61c2cb7b6ae2c81238fd52ae13636c60435abcd732d41531a0%40%3Ccommits.druid.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/rd262f59b1586a108e320e5c966feeafbb1b8cdc96965debc7cc10b16%40%3Ccommits.druid.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/rfb2bf8597e53364ccab212fbcbb2a4e9f0a9e1429b1dc08023c6868e%40%3Cdev.tinkerpop.apache.org%3E	Mailing List
https://lists.debian.org/debian-lts-announce/2023/01/msg00008.html	Mailing List
https://security.netapp.com/advisory/ntap-20220210-0012	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://www.oracle.com/security-alerts/cpuapr2022.html	2023-11-07
https://www.oracle.com/security-alerts/cpujan2022.html	2023-11-07
https://www.oracle.com/security-alerts/cpujul2022.html	2023-11-07

URL	Date	SRC
https://www.debian.org/security/2023/dsa-5316	2023-11-07
https://access.redhat.com/security/cve/CVE-2021-37137	2023-09-14
https://bugzilla.redhat.com/show_bug.cgi?id=2004135	2023-09-14

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Netty Search vendor "Netty"		Netty Search vendor "Netty" for product "Netty"				< 4.1.68 Search vendor "Netty" for product "Netty" and version " < 4.1.68"		-		Affected
Oracle Search vendor "Oracle"		Banking Apis Search vendor "Oracle" for product "Banking Apis"				>= 18.1 <= 18.3 Search vendor "Oracle" for product "Banking Apis" and version " >= 18.1 <= 18.3"		-		Affected
Oracle Search vendor "Oracle"		Banking Apis Search vendor "Oracle" for product "Banking Apis"				19.1 Search vendor "Oracle" for product "Banking Apis" and version "19.1"		-		Affected
Oracle Search vendor "Oracle"		Banking Apis Search vendor "Oracle" for product "Banking Apis"				19.2 Search vendor "Oracle" for product "Banking Apis" and version "19.2"		-		Affected
Oracle Search vendor "Oracle"		Banking Apis Search vendor "Oracle" for product "Banking Apis"				20.1 Search vendor "Oracle" for product "Banking Apis" and version "20.1"		-		Affected
Oracle Search vendor "Oracle"		Banking Apis Search vendor "Oracle" for product "Banking Apis"				21.1 Search vendor "Oracle" for product "Banking Apis" and version "21.1"		-		Affected
Oracle Search vendor "Oracle"		Banking Digital Experience Search vendor "Oracle" for product "Banking Digital Experience"				18.1 Search vendor "Oracle" for product "Banking Digital Experience" and version "18.1"		-		Affected
Oracle Search vendor "Oracle"		Banking Digital Experience Search vendor "Oracle" for product "Banking Digital Experience"				18.2 Search vendor "Oracle" for product "Banking Digital Experience" and version "18.2"		-		Affected
Oracle Search vendor "Oracle"		Banking Digital Experience Search vendor "Oracle" for product "Banking Digital Experience"				18.3 Search vendor "Oracle" for product "Banking Digital Experience" and version "18.3"		-		Affected
Oracle Search vendor "Oracle"		Banking Digital Experience Search vendor "Oracle" for product "Banking Digital Experience"				19.1 Search vendor "Oracle" for product "Banking Digital Experience" and version "19.1"		-		Affected
Oracle Search vendor "Oracle"		Banking Digital Experience Search vendor "Oracle" for product "Banking Digital Experience"				19.2 Search vendor "Oracle" for product "Banking Digital Experience" and version "19.2"		-		Affected
Oracle Search vendor "Oracle"		Banking Digital Experience Search vendor "Oracle" for product "Banking Digital Experience"				20.1 Search vendor "Oracle" for product "Banking Digital Experience" and version "20.1"		-		Affected
Oracle Search vendor "Oracle"		Banking Digital Experience Search vendor "Oracle" for product "Banking Digital Experience"				21.1 Search vendor "Oracle" for product "Banking Digital Experience" and version "21.1"		-		Affected
Oracle Search vendor "Oracle"		Commerce Guided Search Search vendor "Oracle" for product "Commerce Guided Search"				11.3.2 Search vendor "Oracle" for product "Commerce Guided Search" and version "11.3.2"		-		Affected
Oracle Search vendor "Oracle"		Communications Brm - Elastic Charging Engine Search vendor "Oracle" for product "Communications Brm - Elastic Charging Engine"				< 12.0.0.4.6 Search vendor "Oracle" for product "Communications Brm - Elastic Charging Engine" and version " < 12.0.0.4.6"		-		Affected
Oracle Search vendor "Oracle"		Communications Brm - Elastic Charging Engine Search vendor "Oracle" for product "Communications Brm - Elastic Charging Engine"				12.0.0.5.0 Search vendor "Oracle" for product "Communications Brm - Elastic Charging Engine" and version "12.0.0.5.0"		-		Affected
Oracle Search vendor "Oracle"		Communications Cloud Native Core Binding Support Function Search vendor "Oracle" for product "Communications Cloud Native Core Binding Support Function"				1.10.0 Search vendor "Oracle" for product "Communications Cloud Native Core Binding Support Function" and version "1.10.0"		-		Affected
Oracle Search vendor "Oracle"		Communications Diameter Signaling Router Search vendor "Oracle" for product "Communications Diameter Signaling Router"				>= 8.0.0.0 <= 8.5.0.2 Search vendor "Oracle" for product "Communications Diameter Signaling Router" and version " >= 8.0.0.0 <= 8.5.0.2"		-		Affected
Oracle Search vendor "Oracle"		Peoplesoft Enterprise Peopletools Search vendor "Oracle" for product "Peoplesoft Enterprise Peopletools"				8.57 Search vendor "Oracle" for product "Peoplesoft Enterprise Peopletools" and version "8.57"		-		Affected
Oracle Search vendor "Oracle"		Peoplesoft Enterprise Peopletools Search vendor "Oracle" for product "Peoplesoft Enterprise Peopletools"				8.58 Search vendor "Oracle" for product "Peoplesoft Enterprise Peopletools" and version "8.58"		-		Affected
Oracle Search vendor "Oracle"		Peoplesoft Enterprise Peopletools Search vendor "Oracle" for product "Peoplesoft Enterprise Peopletools"				8.59 Search vendor "Oracle" for product "Peoplesoft Enterprise Peopletools" and version "8.59"		-		Affected
Oracle Search vendor "Oracle"		Webcenter Portal Search vendor "Oracle" for product "Webcenter Portal"				12.2.1.3.0 Search vendor "Oracle" for product "Webcenter Portal" and version "12.2.1.3.0"		-		Affected
Oracle Search vendor "Oracle"		Webcenter Portal Search vendor "Oracle" for product "Webcenter Portal"				12.2.1.4.0 Search vendor "Oracle" for product "Webcenter Portal" and version "12.2.1.4.0"		-		Affected
Quarkus Search vendor "Quarkus"		Quarkus Search vendor "Quarkus" for product "Quarkus"				< 2.2.4 Search vendor "Quarkus" for product "Quarkus" and version " < 2.2.4"		-		Affected
Netapp Search vendor "Netapp"		Oncommand Insight Search vendor "Netapp" for product "Oncommand Insight"				-		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0"		-		Affected