CVE-2024-40632 json
Linkerd potential access to the shutdown endpoint
published 2024-07-15 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-38551 , GHSA-6v94-gj6x-jqj7 , GO-2024-2984
- cvss
- 3.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 38%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- go github.com/linkerd/linkerd2 0.5.1-0.20240614165515-35fb2d6d11ef
- linkerd linkerd edge-24.6.2
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/linkerd/linkerd2 | <0.5.1-0.20240614165515-35fb2d6d11ef |
0.5.1-0.20240614165515-35fb2d6d11ef |
Affected products
- linkerd linkerd2
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/linkerd/linkerd2/commit/35fb2d6d11ef6520ae516dd717790529f85224fa
patch
-
github.com
/linkerd/linkerd2/security/advisories/GHSA-6v94-gj6x-jqj7
web
-
github.com
/linkerd/linkerd2-proxy/blob/46957de49f25fd4661af7b7c52659148f4d6dd27/linkerd/app/admin/src/server.rs
web
-
nvd.nist.gov
/vuln/detail/CVE-2024-40632
advisory
Sources
- CVE List CVE-2024-40632
- NVD CVE-2024-40632
- OSV GO-2024-2984
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.