p PatchFirst

CVE-2017-12425

CVE-2017-12425

This page contains facts from public vulnerability sources. Check the original advisory before updating.

An issue was discovered in Varnish HTTP Cache 4.0.1 through 4.0.4, 4.1.0 through 4.1.7, 5.0.0, and 5.1.0 through 5.1.2. A wrong if statement in the varnishd source code means that particular invalid requests from the client can trigger an assert, related to an Integer Overflow. This causes the varnishd worker process to abort and restart, losing the cached contents in the process. An attacker can therefore crash the varnishd worker process on demand and effectively keep it from serving content - a Denial-of-Service attack. The specific source-code filename containing the incorrect statement varies across releases.

CVSS 7.5 · High · EPSS 2.4% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • varnish Debian:12

    Affected ranges
    • ECOSYSTEM: < 5.0.0-7.1

    Update to 5.0.0-7.1

  • varnish Debian:13

    Affected ranges
    • ECOSYSTEM: < 5.0.0-7.1

    Update to 5.0.0-7.1

  • varnish Ubuntu:16.04:LTS

    Versions
    • 4.0.3-1
    • 4.1.0-1
    • 4.1.0-2
    • 4.1.1-1
    Affected ranges
    • ECOSYSTEM: < 4.1.1-1ubuntu0.2

    Update to 4.1.1-1ubuntu0.2

Original sources

Check your server →