CVE-2023-32187 json
K3s apiserver port is vulnerable to unauthenticated remote denial-of-service (DoS) attack via TLS SAN stuffing attack
published 2023-09-11 3 y ago modified 2026-09-10 1 mo ago also GHSA-m4hf-6vgr-75r2 , EUVD-2023-2541
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 54%
- public exploits
- 0
- none known
Summary
An Allocation of Resources Without Limits or Throttling vulnerability in SUSE k3s allows attackers with access to K3s servers' apiserver/supervisor port (TCP 6443) cause denial of service. This issue affects k3s: from v1.24.0 before v1.24.17+k3s1, from v1.25.0 before v1.25.13+k3s1, from v1.26.0 before v1.26.8+k3s1, from sev1.27.0 before v1.27.5+k3s1, from v1.28.0 before v1.28.1+k3s1.
Patch / fix
- go github.com/k3s-io/k3s 1.24.17, 1.25.13, 1.26.8, 1.27.5, 1.28.1
- SUSE k3s v1.24.17+k3s1, v1.25.13+k3s1, v1.26.8+k3s1, v1.27.5+k3s1, v1.28.1+k3s1
- k3s k3s 1.24.17+k3s1, 1.25.13+k3s1, 1.26.8+k3s1, 1.27.5+k3s1, 1.28.1+k3s1
- k3s Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 1.27.5.1-r0
alpine advisories ALPINE-CVE-2023-32187
Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.72% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/k3s-io/k3s | <1.24.17 >=1.25.0, <1.25.13 >=1.26.0, <1.26.8 >=1.27.0, <1.27.5 >=1.28.0, <1.28.1 |
1.24.17 1.25.13 1.26.8 1.27.5 1.28.1 |
Affected products
- SUSE k3s
- k3s k3s
Classification
- Weakness
-
- CWE-770 Allocation of Resources Without Limits or Throttling
References
-
github.com
/k3s-io/k3s/security/advisories/GHSA-m4hf-6vgr-75r2
web, mitigation, vendor-advisory
-
bugzilla.suse.com
/show_bug.cgi?id=CVE-2023-32187https://
broken-link
-
nvd.nist.gov
/vuln/detail/CVE-2023-32187
advisory
-
bugzilla.suse.com
/show_bug.cgi?id=CVE-2023-32187https:/
web
-
github.com
/k3s-io/k3s
package
Sources
- CVE List CVE-2023-32187
- GitHub Advisory GHSA-m4hf-6vgr-75r2
- NVD CVE-2023-32187
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.