THREATPORT/VULNERABILITY/CVE-2020-11612
HIGH SEVERITY

CVE-2020-11612

Netty vulnerability

CVSS
7.5
EPSS
9.4%
EPSS pct
95th
Exploited
No known
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.
Affected vendor
Netty
Affected product
Netty
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness type (CWE)
  • CWE-770 — Allocation of Resources Without Limits or Throttling
Published
2020-04-07

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 9.4% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 95% of all scored CVEs.

Check your external exposure to CVE-2020-11612

  • Confirm whether Netty Netty is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2020-11612.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-11612

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-11612 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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