fix(deps): update dependency astro to v5.0.8 [security]

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
astro (source)	5.0.5 -> 5.0.8

GitHub Vulnerability Alerts

CVE-2024-56159

Summary

A bug in the build process allows any unauthenticated user to read parts of the server source code.

Details

During build, along with client assets such as css and font files, the sourcemap files for the server code are moved to a publicly-accessible folder.
https://github.com/withastro/astro/blob/176fe9f113fd912f9b61e848b00bbcfecd6d5c2c/packages/astro/src/core/build/static-build.ts#L139

Any outside party can read them with an unauthorized HTTP GET request to the same server hosting the rest of the website.

While some server files are hashed, making their access obscure, the files corresponding to the file system router (those in src/pages) are predictably named. For example. the sourcemap file for src/pages/index.astro gets named dist/client/pages/index.astro.mjs.map.

PoC

Here is one example of an affected open-source website:
https://creatorsgarten.org/pages/index.astro.mjs.map

The file can be saved and opened using https://evanw.github.io/source-map-visualization/ to reconstruct the source code.

The above accurately mirrors the source code as seen in the repository: https://github.com/creatorsgarten/creatorsgarten.org/blob/main/src/pages/index.astro

The above was found as the 4th result (and the first one on Astro 5.0+) when making the following search query on GitHub.com (search results link):

path:astro.config.mjs @​sentry/astro

This vulnerability is the root cause of https://github.com/withastro/astro/issues/12703, which links to a simple stackblitz project demonstrating the vulnerability. Upon build, notice the contents of the dist/client (referred to as config.build.client in astro code) folder. All astro servers make the folder in question accessible to the public internet without any authentication. It contains .map files corresponding to the code that runs on the server.

Impact

All server-output (SSR) projects on Astro 5 versions v5.0.3 through v5.0.6 (inclusive), that have sourcemaps enabled, either directly or through an add-on such as sentry, are affected. The fix for server-output projects was released in [email protected].

Additionally, all static-output (SSG) projects built using Astro 4 versions 4.16.17 or older, or Astro 5 versions 5.0.7 or older, that have sourcemaps enabled are also affected. The fix for static-output projects was released in [email protected], and backported to Astro v4 in [email protected].

The immediate impact is limited to source code. Any secrets or environment variables are not exposed unless they are present verbatim in the source code.

There is no immediate loss of integrity within the the vulnerable server. However, it is possible to subsequently discover another vulnerability via the revealed source code .

There is no immediate impact to availability of the vulnerable server. However, the presence of an unsafe regular expression, for example, can quickly be exploited to subsequently compromise the availability.

• Network attack vector.
• Low attack complexity.
• No privileges required.
• No interaction required from an authorized user.
• Scope is limited to first party. Although the source code of closed-source third-party software may also be exposed.

Remediation

The fix for server-output projects was released in [email protected], and the fix for static-output projects was released in [email protected] and backported to Astro v4 in [email protected]. Users are advised to update immediately if they are using sourcemaps or an integration that enables sourcemaps.

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Release Notes

withastro/astro (astro)

v5.0.8

Compare Source

Patch Changes

• #​12749 039d022 Thanks @​matthewp! - Clean server sourcemaps from static output

v5.0.7

Compare Source

Patch Changes

• #​12746 c879f50 Thanks @​matthewp! - Remove all assets created from the server build

v5.0.6

Compare Source

Patch Changes

• #​12597 564ac6c Thanks @​florian-lefebvre! - Fixes an issue where image and server islands routes would not be passed to the astro:routes:resolved hook during builds

• #​12718 ccc5ad1 Thanks @​ematipico! - Fixes an issue where Astro couldn't correctly handle i18n fallback when using the i18n middleware

• #​12728 ee66a45 Thanks @​argyleink! - Adds type support for the closedby attribute for <dialog> elements

• #​12709 e3bfd93 Thanks @​mtwilliams-code! - Fixes a bug where Astro couldn't correctly parse params and props when receiving i18n fallback URLs

• #​12657 14dffcc Thanks @​darkmaga! - Trailing slash support for actions

• #​12715 029661d Thanks @​ascorbic! - Fixes a bug that caused errors in dev when editing sites with large numbers of MDX pages

• #​12729 8b1cecd Thanks @​JoeMorgan! - "Added inert to htmlBooleanAttributes"

• #​12726 7c7398c Thanks @​florian-lefebvre! - Fixes a case where failing content entries in astro check would not be surfaced

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