---
cve: "CVE-2023-54356"
severity: "CRITICAL"
cvss: 9.3
epss: "0.1%"
vendor: "kyverno"
kev: false
exploited: false
published: "2026-09-01 12:17:11"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-01T19:15:50+02:00"
---

# CVE-2023-54356

> 9.3 CRITICAL · 🧪 PoC

## Beschreibung

Kyverno versions 1.9.4 and earlier support insecure 3DES cipher suites (TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA and TLS_RSA_WITH_3DES_EDE_CBC_SHA) on their TLS endpoints. These 64-bit block ciphers are vulnerable to the Sweet32 attack (CVE-2016-2183), which, over very long-lived TLS connections carrying large volumes of traffic, could allow an attacker to recover small amounts of plaintext. The issue is fixed in Kyverno 1.9.5 and 1.10.0.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **partial**

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- f4efee1daefacb4d391f48dfcb8f025478e4e332 (Commit)

## Referenzen

- <https://github.com/kyverno/kyverno/security/advisories/GHSA-hgv6-w7r3-w4qw>
- <https://www.vulncheck.com/advisories/kyverno-before-1.9.5-sweet32-medium-strength-cipher-suites>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-54356) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_