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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2017-08-04T09:00:00

Updated: 2024-08-05T18:36:56.186Z

Reserved: 2017-08-04T00:00:00

Link: CVE-2017-12425

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2017-08-04T09:29:00.237

Modified: 2022-08-02T19:13:18.077

Link: CVE-2017-12425

cve-icon Redhat

Severity : Moderate

Publid Date: 2017-08-02T00:00:00Z

Links: CVE-2017-12425 - Bugzilla