CVE-2026-46354
Coder: PKCS#7 signature bypass in Azure instance identity allows unauthenticated agent token theft
Sévérité par source
Le label propre à Trivy est CRITICAL. Critique selon GHSA.
Description
Coder allows organizations to provision remote development environments via Terraform. In versions prior tp 2.24.5, 2.29.13, 2.30.8, 2.31.12, 2.32.2, and 2.33.3, `azureidentity.Validate()` verifies that the PKCS#7 signer certificate chains to a trusted Azure CA but never verifies the PKCS#7 signature itself. An attacker can embed a legitimate Azure certificate alongside arbitrary content e.g. `{"vmId":"<target>"}` and the forged `vmId` will be accepted returning the victim workspace agent's session token. No authentication is required. The attacker only needs to know a target VM's `vmId` which is a `UUIDv4`. That's a practical limitation which would typically require prior access to be exploited. Versions 2.24.5, 2.29.13, 2.30.8, 2.31.12, 2.32.2, and 2.33.3 patch the issue. As a workaround, reconfigure any Azure templates to use token authentication rather than `azure-instance-identity`.
Paquets affectés et versions corrigées
| Source | Paquet | Corrigé en |
|---|---|---|
| go::GitHub Security Advisory Go | github.com/coder/coder, github.com/coder/coder/v2 | 2.33.3, 2.32.2, 2.31.12, 2.30.8, 2.29.13, 2.24.5 |
Afficher les 2 entrées d'une source
| Source | Paquet | Corrigé en |
|---|---|---|
| go::GitHub Security Advisory Go | github.com/coder/coder | pas de correctif indiqué |
| go::GitHub Security Advisory Go | github.com/coder/coder/v2 | 2.33.3, 2.32.2, 2.31.12, 2.30.8, 2.29.13, 2.24.5 |
Références
- https://github.com/coder/coder
- https://github.com/coder/coder/pull/25286
- https://github.com/coder/coder/releases/tag/v2.24.5
- https://github.com/coder/coder/releases/tag/v2.29.13
- https://github.com/coder/coder/releases/tag/v2.30.8
- https://github.com/coder/coder/releases/tag/v2.31.12
- https://github.com/coder/coder/releases/tag/v2.32.2
- https://github.com/coder/coder/releases/tag/v2.33.3