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CVE-2020-11612

HIGHCVSS 7.5/10EPSS 9.44%

Last modified

CVE-2020-11612 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 9.44% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
9.44%

94.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
NettyNetty>= 4.1, < 4.1.46
DebianDebian Linux9.0
DebianDebian Linux10.0
FedoraprojectFedora33
NetappOncommand Api ServicesAll versions
NetappOncommand InsightAll versions
NetappOncommand Workflow AutomationAll versions
OracleCommunications Brm - Elastic Charging Engine12.0.0.3
OracleCommunications Cloud Native Core Service Communication Proxy1.5.2
OracleCommunications Design Studio7.4.2
OracleNosql Database< 20.3
OracleSiebel Core - Server Framework< 21.5
OracleWebcenter Portal12.2.1.3.0
OracleWebcenter Portal12.2.1.4.0
OracleCommunications Messaging Server8.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-11612?
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.
How severe is CVE-2020-11612?
CVE-2020-11612 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 9.44% probability of exploitation in the next 30 days.
How do I fix CVE-2020-11612?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-11612?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST