CVE-2024-40632
In affected versions when the application being run by linkerd is susceptible to SSRF, an attacker could potentially trigger a denial-of-service (DoS) attack by making requests to localhost:4191/shutdown.
Does this matter?
Lower severity and a low EPSS score (0.44%). Track it; it rarely justifies an emergency change on its own.
Description
Linkerd is an open source, ultralight, security-first service mesh for Kubernetes. In affected versions when the application being run by linkerd is susceptible to SSRF, an attacker could potentially trigger a denial-of-service (DoS) attack by making requests to localhost:4191/shutdown. Linkerd could introduce an optional environment variable to control a token that must be passed as a header. Linkerd should reject shutdown requests that do not include this header. This issue has been addressed in release version edge-24.6.2 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
- CVSS 3.1
- 3.7 LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- EPSS
- 0.44% probability · 38th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-918
- Source
- security-advisories@github.com
References
- https://github.com/linkerd/linkerd2-proxy/blob/46957de49f25fd4661af7b7c52659148f4d6dd27/linkerd/app/admin/src/server.rs
- https://github.com/linkerd/linkerd2/commit/35fb2d6d11ef6520ae516dd717790529f85224fa
- https://github.com/linkerd/linkerd2/security/advisories/GHSA-6v94-gj6x-jqj7
- https://github.com/linkerd/linkerd2-proxy/blob/46957de49f25fd4661af7b7c52659148f4d6dd27/linkerd/app/admin/src/server.rs
- https://github.com/linkerd/linkerd2/commit/35fb2d6d11ef6520ae516dd717790529f85224fa
- https://github.com/linkerd/linkerd2/security/advisories/GHSA-6v94-gj6x-jqj7
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.