Immich: A regular user can create SharedLink for album/asset belonging to another user through CreateSharedLink API

immich · CWE-285 · CWE-285

Affectedimmich

FixNo fix listed yet.

PublishedOct 30, 19:53 · GitHub_M

ScoredOct 30 · 3.5 · GitHub_M

Exploit code publicNone known · checked 21:18 UTC

ExploitedNone known · CISA KEV checked 22:11 UTC

What we know

No known exploitation. CISA KEV, checked 22:11 UTC.

No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.

An attacker needs network access and an account. CVSS: network, low privileges.

Someone has to open, click or run something first. CVSS: user interaction required.

Description

Immich is a high-performance self-hosted photo and video management solution. Prior to 3.2.0, the shared-link creation API accepted albumId and assetIds as independent fields in server/src/services/shared-link.service.ts but authorized only the resource selected by the requested link type. An authenticated attacker who already knew a victim-owned asset UUID could select SharedLinkType.Album for an attacker-owned album while supplying that UUID in assetIds; SharedLinkService.create() persisted the unchecked association in shared_link_asset and made the victim asset available through the new anonymous shared-link credential. This exposed victim metadata, thumbnails, and the byte-identical original file and created a persistent sharing relationship that could be redistributed. This issue is fixed in version 3.2.0.

From GitHub_M

Affected and fixed versions

ProductAffectedFixed inimmich< 3.2.0–

Exploit code

Exploit-DBnone knownMetasploitnone knownNucleinone known

References

github.com/immich-app/immich/security/advisories/GHSA-g4w3-c888-cr93 · github.comrefsource_CONFIRM github.com/immich-app/immich/pull/30762 · github.comrefsource_MISC github.com/immich-app/immich/commit/6a61901e79972bbfe5690636a995e156219b9a8f · github.comrefsource_MISC github.com/immich-app/immich/releases/tag/v3.2.0 · github.comrefsource_MISC

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