CVE-2021-42550: Deserialization of Untrusted Data in logback

CVE-2021-42550 · Severity: low · CVSS 3.1 · Published 2021-12-17

Deserialization of Untrusted Data in logback

Technologies: ch.qos.logback:logback-core (Maven). Vendors: Maven.

Quick answers

Is CVE-2021-42550 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-42550 being exploited in the wild.
How severe is CVE-2021-42550?
Low severity, with a CVSS score of 3.1, published 17 December 2021.
Which products and versions are affected?
ch.qos.logback:logback-core (Maven) ECOSYSTEM:introduced=0,fixed=1.2.9.
Is there a fix for CVE-2021-42550?
Yes. ch.qos.logback:logback-core (Maven): upgrade to 1.2.9 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2021-42550?
Check whether you run ch.qos.logback:logback-core (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • ch.qos.logback:logback-core (Maven): upgrade to 1.2.9 or later
    # set ch.qos.logback:logback-core to 1.2.9 in your pom.xml or build.gradle

Affected products

  • ch.qos.logback:logback-core (Maven) ECOSYSTEM:introduced=0,fixed=1.2.9

Identifiers

  • CVE-2021-42550
  • GHSA-668q-qrv7-99fm

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