Is CVE-2020-11612 in the CISA KEV catalog?

No. CVE-2020-11612 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-11612?

CVE-2020-11612 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2020-11612?

CVE-2020-11612 has an EPSS score of 9.44% (95th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-11612?

Upgrade netty on debian 11 to 1:4.1.48-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2020-11612

HIGHEPSS 95th pctl

7.5

CVSS v3

NVD

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.

CWE-770Allocation of Resources Without Limits or Throttling

How to fix

Remediation Available

nettyDebian

Fixed in:1:4.1.48-1CVE-2020-11612

libnetty-javaUbuntu

Fixed in:1:4.0.34-1ubuntu0.1~esm1USN-6049-1

Fixed in:1:4.1.7-4ubuntu0.1USN-4600-2

Fixed in:1:4.1.7-4ubuntu0.1+esm2USN-6049-1

Fixed in:1:4.1.45-1ubuntu0.1~esm1USN-6049-1

Fixed in:1:4.1.48-4+deb11u1build0.22.04.1USN-6049-1

Fixed in:1:4.1.48-5ubuntu0.1USN-6049-1

nettyUbuntu

Fixed in:1:4.0.34-1ubuntu0.1~esm1USN-6049-1

Fixed in:1:4.1.7-4ubuntu0.1+esm2USN-6049-1

Fixed in:1:4.1.7-4ubuntu0.1USN-4600-2

Fixed in:1:4.1.45-1ubuntu0.1~esm1USN-6049-1

Fixed in:1:4.1.48-4+deb11u1build0.22.04.1USN-6049-1

Fixed in:1:4.1.48-5ubuntu0.1USN-6049-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

9.44%probability of exploitation in 30 days

95thpercentile

High risk: more likely to be exploited than 95% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.