CVE-2020-11612

HIGH

Netty 4.1.0-4.1.45 - Unbounded Memory Allocation in ZlibDecoder

Title source: llm
STIX 2.1

Description

The ZlibDecoders in Netty 4.1.x before 4.1.46 allow for unbounded memory allocation while decoding a ZlibEncoded byte stream. An attacker could send a large ZlibEncoded byte stream to the Netty server, forcing the server to allocate all of its free memory to a single decoder.

References (45)

Core 45
Core References
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/09/msg00003.html
Patch, Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpujan2021.html
Third Party Advisory x_refsource_misc
https://github.com/netty/netty/issues/6168
Patch, Third Party Advisory x_refsource_misc
https://github.com/netty/netty/pull/9924
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20201223-0001/
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2021/dsa-4885
Patch, Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpuApr2021.html
Patch, Third Party Advisory x_refsource_misc
https://www.oracle.com//security-alerts/cpujul2021.html
Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpuapr2022.html

Scores

CVSS v3 7.5
EPSS 0.0433
EPSS Percentile 89.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-770
Status published
Products (16)
debian/debian_linux 9.0
debian/debian_linux 10.0
fedoraproject/fedora 33
io.netty/netty-handler 4.1.0 - 4.1.46Maven
netapp/oncommand_api_services
netapp/oncommand_insight
netapp/oncommand_workflow_automation
netty/netty 4.1 - 4.1.46
oracle/communications_brm_-_elastic_charging_engine 12.0.0.3
oracle/communications_cloud_native_core_service_communication_proxy 1.5.2
... and 6 more
Published Apr 07, 2020
Tracked Since Feb 18, 2026