CVE-2021-37136

Netty vulnerability

CVSS

7.5

EPSS

5.7%

EPSS pct

92th

Exploited

No known

The Bzip2 decompression decoder function doesn't allow setting size restrictions on the decompressed output data (which affects the allocation size used during decompression). All users of Bzip2Decoder are affected. The malicious input can trigger an OOME and so a DoS attack

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-400 — Uncontrolled Resource Consumption

Published

2021-10-19

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 5.7% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 92% of all scored CVEs.

Check your external exposure to CVE-2021-37136

Confirm whether Netty Netty is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2021-37136.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-37136

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-37136 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2021-37136?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2021-37136.

Start free scan

No credit card. Agentless.

Related vulnerabilities

Fortios vulnerability

HIGH

CVE-2015-7730

Businessobjects vulnerability