[Snyk] Security upgrade nginx from 1.19.3-alpine to 1.27.3-alpine

[ekmixon]

Snyk has created this PR to fix 4 vulnerabilities in the dockerfile dependencies of this project.

Keeping your Docker base image up-to-date means you’ll benefit from security fixes in the latest version of your chosen image.

Snyk changed the following file(s):

• devenv/docker/blocks/prometheus_basic_auth_proxy/Dockerfile

We recommend upgrading to nginx:1.27.3-alpine, as this image has only 0 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Out-of-bounds Read SNYK-ALPINE312-APKTOOLS-1533753	714
	Double Free SNYK-ALPINE312-CURL-1585256	714
	Out-of-bounds Write SNYK-ALPINE312-FREETYPE-2809179	714
	Buffer Overflow SNYK-ALPINE312-OPENSSL-1569452	714
	Buffer Overflow SNYK-ALPINE312-OPENSSL-1569452	714

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Summary by Sourcery

Bug Fixes:

• Upgrade nginx base image in Dockerfile to address multiple critical vulnerabilities including Out-of-bounds Read, Double Free, Out-of-bounds Write, and Buffer Overflow.

[secure-code-warrior-for-github]

Micro-Learning Topic: Buffer overflow (Detected by phrase)

Matched on "Buffer Overflow"

What is this? (2min video)

A buffer overflow condition exists when a program attempts to put more data in a buffer than it can hold or when a program attempts to put data in a memory area past a buffer.

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Micro-Learning Topic: Double free (Detected by phrase)

Matched on "Double Free"

What is this? (2min video)

Double free errors occur when free() is called more than once with the same memory address as an argument.

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[sourcery-ai]

Reviewer's Guide by Sourcery

This PR updates the NGINX base image from version 1.19.3-alpine to 1.27.3-alpine in the Prometheus basic auth proxy Dockerfile to address multiple critical security vulnerabilities in the Alpine Linux dependencies.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Update NGINX base image version to patch security vulnerabilities	Upgrade NGINX from 1.19.3-alpine to 1.27.3-alpine Fix critical Out-of-bounds Read vulnerability in apk-tools Fix critical Double Free vulnerability in curl Fix critical Out-of-bounds Write vulnerability in freetype Fix critical Buffer Overflow vulnerability in openssl	devenv/docker/blocks/prometheus_basic_auth_proxy/Dockerfile

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[sourcery-ai]

We have skipped reviewing this pull request. Here's why:

• It seems to have been created by a bot ('[Snyk]' found in title). We assume it knows what it's doing!
• We don't review packaging changes - Let us know if you'd like us to change this.

[guardrails]

⚠️ We detected 1 security issue in this pull request:

Insecure Access Control (1)

Severity	Details	Docs
High	Title: Missing User Instruction grafana/devenv/docker/blocks/prometheus_basic_auth_proxy/Dockerfile Line 1 in 306b881 FROM nginx:1.27.3-alpine	📚

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[secure-code-warrior-for-github]

Micro-Learning Topic: Insufficient access control (Detected by phrase)

Matched on "Insecure Access Control"

Restrictions on what authenticated users are allowed to do are often not properly enforced. Attackers can exploit these flaws to access unauthorized functionality and/or data, such as access other users' accounts, view sensitive files, modify other users’ data, change access rights, etc. Source: https://www.owasp.org/index.php/Category:OWASP_Top_Ten_Project

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