--- id: CVE-2021-37137 title: >- The Snappy frame decoder function doesn't restrict the chunk length which may lead to excessive memory usage summary: >- 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 … severity: high cvss: 7.5 cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H' cwe: - CWE-400 - CWE-400 vendor: netty product: netty affected: - netty < 4.1.68 - 'banking_apis >= 18.1, <= 18.3' - banking_apis = 19.1 - banking_apis = 19.2 - banking_apis = 20.1 - banking_apis = 21.1 - banking_digital_experience = 18.1 - banking_digital_experience = 18.2 - banking_digital_experience = 18.3 - banking_digital_experience = 19.1 - banking_digital_experience = 19.2 - banking_digital_experience = 20.1 - banking_digital_experience = 21.1 - commerce_guided_search = 11.3.2 - communications_brm_-_elastic_charging_engine < 12.0.0.4.6 - communications_brm_-_elastic_charging_engine = 12.0.0.5.0 - communications_cloud_native_core_binding_support_function = 1.10.0 - 'communications_diameter_signaling_router >= 8.0.0.0, <= 8.5.0.2' - peoplesoft_enterprise_peopletools = 8.57 - peoplesoft_enterprise_peopletools = 8.58 - peoplesoft_enterprise_peopletools = 8.59 - webcenter_portal = 12.2.1.3.0 - webcenter_portal = 12.2.1.4.0 - quarkus < 2.2.4 - oncommand_insight - debian_linux = 10.0 - debian_linux = 11.0 patched: - netty 4.1.68 - communications_brm_-_elastic_charging_engine 12.0.0.4.6 - quarkus 2.2.4 published: '2021-10-19' updated: '2026-10-08' sourceUpdated: '2026-10-08T22:17:10.853' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-37137' references: - url: 'https://github.com/netty/netty/security/advisories/GHSA-9vjp-v76f-g363' label: reefs@jfrog.com - url: >- https://lists.apache.org/thread.html/r06a145c9bd41a7344da242cef07977b24abe3349161ede948e30913d%40%3Ccommits.druid.apache.org%3E label: reefs@jfrog.com - url: >- https://lists.apache.org/thread.html/r5406eaf3b07577d233b9f07cfc8f26e28369e6bab5edfcab41f28abb%40%3Ccommits.druid.apache.org%3E label: reefs@jfrog.com - url: >- https://lists.apache.org/thread.html/r5e05eba32476c580412f9fbdfc9b8782d5b40558018ac4ac07192a04%40%3Ccommits.druid.apache.org%3E label: reefs@jfrog.com - url: >- https://lists.apache.org/thread.html/r75490c61c2cb7b6ae2c81238fd52ae13636c60435abcd732d41531a0%40%3Ccommits.druid.apache.org%3E label: reefs@jfrog.com - url: >- https://lists.apache.org/thread.html/rd262f59b1586a108e320e5c966feeafbb1b8cdc96965debc7cc10b16%40%3Ccommits.druid.apache.org%3E label: reefs@jfrog.com - url: >- https://lists.apache.org/thread.html/rfb2bf8597e53364ccab212fbcbb2a4e9f0a9e1429b1dc08023c6868e%40%3Cdev.tinkerpop.apache.org%3E label: reefs@jfrog.com - url: 'https://lists.debian.org/debian-lts-announce/2023/01/msg00008.html' label: reefs@jfrog.com - url: 'https://security.netapp.com/advisory/ntap-20220210-0012/' label: reefs@jfrog.com - url: 'https://www.debian.org/security/2023/dsa-5316' label: reefs@jfrog.com - url: 'https://www.oracle.com/security-alerts/cpuapr2022.html' label: reefs@jfrog.com - url: 'https://www.oracle.com/security-alerts/cpujan2022.html' label: reefs@jfrog.com - url: 'https://www.oracle.com/security-alerts/cpujul2022.html' label: reefs@jfrog.com - url: 'https://github.com/netty/netty/security/advisories/GHSA-9vjp-v76f-g363' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/r06a145c9bd41a7344da242cef07977b24abe3349161ede948e30913d%40%3Ccommits.druid.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/r5406eaf3b07577d233b9f07cfc8f26e28369e6bab5edfcab41f28abb%40%3Ccommits.druid.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/r5e05eba32476c580412f9fbdfc9b8782d5b40558018ac4ac07192a04%40%3Ccommits.druid.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/r75490c61c2cb7b6ae2c81238fd52ae13636c60435abcd732d41531a0%40%3Ccommits.druid.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/rd262f59b1586a108e320e5c966feeafbb1b8cdc96965debc7cc10b16%40%3Ccommits.druid.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/rfb2bf8597e53364ccab212fbcbb2a4e9f0a9e1429b1dc08023c6868e%40%3Cdev.tinkerpop.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://lists.debian.org/debian-lts-announce/2023/01/msg00008.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://security.netapp.com/advisory/ntap-20220210-0012/' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.debian.org/security/2023/dsa-5316' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.oracle.com/security-alerts/cpuapr2022.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.oracle.com/security-alerts/cpujan2022.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.oracle.com/security-alerts/cpujul2022.html' label: af854a3a-2127-422b-91ae-364da2661108 tags: - nvd epss: 0.06565 epssPercentile: 0.93651 ingestedAt: '2026-10-08T23:16:47.324Z' --- ## Overview 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. ## Affected - `netty < 4.1.68` - `banking_apis >= 18.1, <= 18.3` - `banking_apis = 19.1` - `banking_apis = 19.2` - `banking_apis = 20.1` - `banking_apis = 21.1` - `banking_digital_experience = 18.1` - `banking_digital_experience = 18.2` - `banking_digital_experience = 18.3` - `banking_digital_experience = 19.1` - `banking_digital_experience = 19.2` - `banking_digital_experience = 20.1` - `banking_digital_experience = 21.1` - `commerce_guided_search = 11.3.2` - `communications_brm_-_elastic_charging_engine < 12.0.0.4.6` - `communications_brm_-_elastic_charging_engine = 12.0.0.5.0` - `communications_cloud_native_core_binding_support_function = 1.10.0` - `communications_diameter_signaling_router >= 8.0.0.0, <= 8.5.0.2` - `peoplesoft_enterprise_peopletools = 8.57` - `peoplesoft_enterprise_peopletools = 8.58` - `peoplesoft_enterprise_peopletools = 8.59` - `webcenter_portal = 12.2.1.3.0` - `webcenter_portal = 12.2.1.4.0` - `quarkus < 2.2.4` - `oncommand_insight` - `debian_linux = 10.0` - `debian_linux = 11.0` ## Remediation Upgrade past the affected range: - `netty 4.1.68` - `communications_brm_-_elastic_charging_engine 12.0.0.4.6` - `quarkus 2.2.4`