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FedoraOperating system · Fedoraproject

CVE-2022-21549

MEDIUM · 5.3 CVSS v3.1 Published 2022-07-19
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
62/100
Remediation priority · Elevated
Remotely reachable No privileges Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Libraries). Supported versions that are affected are Oracle Java SE: 17.0.3.1; Oracle GraalVM Enterprise Edition: 21.3.2 and 22.1.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability can also be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. CVSS 3.1 Base Score 5.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-502

The application rebuilds objects from attacker-supplied serialized data, and the act of rebuilding can trigger dangerous code paths. In many runtimes this leads straight to remote code execution. The durable fix is to avoid deserializing untrusted input — or to use a strict, type-limited format with integrity checks.

General guidance for the deserialization of untrusted data class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
FedoraOperating system
Affected:= 35= 36
Debian LinuxOperating system
Affected:= 11.0
GraalvmApplication
Affected:= 21.3.2= 22.1.0
JdkApplication
Affected:= 17.0.3.1
JreApplication
Affected:= 17.0.3.1
ZuluApplication
Affected:= 17.34
7 Mode Transition ToolApplication
Affected:all versions
Active Iq Unified ManagerApplication
Affected:all versions

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

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

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Patch available Apply the vendor patch
Vendor patch www.oracle.com →
Recommended fix High confidence

Oracle Java SE 17.0.4+ or Oracle GraalVM Enterprise Edition 21.3.3+/22.2.0+

  1. Identify all Java installations in the environment (JDK and JRE) using 'java -version' and checking for JAVA_HOME environment variable
  2. For Oracle Java SE: Upgrade to Java SE 17.0.4 or later from https://www.oracle.com/java/technologies/downloads/
  3. For Oracle GraalVM Enterprise Edition: Upgrade to version 21.3.3 or 22.2.0 or later from https://www.oracle.com/downloads/oracle-graalvm-downloads/
  4. For Azul Zulu: Upgrade to Zulu 17.36 or later (the listed version 17.34 is vulnerable)
  5. After upgrading, verify the new version with 'java -version' and confirm the build matches the fixed release
  6. Restart any services or applications using the old Java installation to ensure they use the patched version
  7. Ensure any automated build pipelines and container images also reference the updated Java versions
Caveat Upgrade within the same major version (17.x) should have minimal compatibility impact; ensure any application-specific Java version requirements are met

Generated from the published advisory — verify against the referenced sources before acting.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2022-21549 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
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