There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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.
    (CVE-2017-12425)

New upstream release. This is a security release with a fix for CVE-2017-12425, a crash bug that might be used in a denial of service attack. Details from the upstream project are found here :

http://varnish-cache.org/security/VSV00001.html

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

A denial of service vulnerability was discovered in Varnish, a state of the art, high-performance web accelerator. Specially crafted HTTP requests can cause the Varnish daemon to assert and restart, clearing the cache in the process.

See https://varnish-cache.org/security/VSV00001.html for details.

ID	Name	Product	Family	Published	Updated	Severity
424642	Alpine: multiple varnish packages: security update to 5.1.3-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	4/4/2025	7/2/2026	high
424642	Alpine: multiple varnish packages: security update to 5.1.3-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	4/4/2025	7/2/2026	high
407450	Alpine: varnish: security update to 4.1.2-r4	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	10/31/2023	7/2/2026	high
407449	Alpine: varnish: security update to 4.1.2-r2	Tenable Cloud Security	Alpine Linux Local Security Checks	10/31/2023	7/2/2026	high
407451	Alpine: varnish: security update to 4.1.3-r1	Tenable Cloud Security	Alpine Linux Local Security Checks	10/31/2023	7/2/2026	high
407449	Alpine: varnish: security update to 4.1.2-r2	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	10/31/2023	7/2/2026	high
407451	Alpine: varnish: security update to 4.1.3-r1	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	10/31/2023	7/2/2026	high
407450	Alpine: varnish: security update to 4.1.2-r4	Tenable Cloud Security	Alpine Linux Local Security Checks	10/31/2023	7/2/2026	high
102485	Fedora 26 : varnish (2017-8f4fba5afa)	Nessus	Fedora Local Security Checks	8/15/2017	11/26/2025	high
102135	Debian DSA-3924-1 : varnish - security update	Nessus	Debian Local Security Checks	8/3/2017	12/4/2025	high
102489	Fedora 25 : varnish (2017-bfbc5de1b1)	Nessus	Fedora Local Security Checks	8/15/2017	11/26/2025	high

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