Home/CVE/Loading specially-crafted yaml with the Kubernetes Java Client library can lead to code execution.
CVE

CVE-2021-25738

Loading specially-crafted yaml with the Kubernetes Java Client library can lead to code execution.

Loading specially-crafted yaml with the Kubernetes Java Client library can lead to code execution.

MEDIUM · CVSS 6.7 EPSS 0.00116
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules6 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
CWE-502Deserialization of Untrusted Data
▤

Affected Products & Versions

3
kubernetes java<= 9.0.2
kubernetes java>= 10.0.0 and <= 10.0.1
kubernetes java>= 11.0.0 and < 11.0.1
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven io.kubernetes:client-java MODERATE fixed in 11.0.1
◈

Sigma Hunt Rules

6
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSuspicious Java Children Processes
producthighSuspicious Processes Spawned by Java.EXE
producthighSuspicious Shells Spawn by Java Utility Keytool
producthighJava Payload Strings
productmediumJava Running with Remote Debugging
productmediumShell Process Spawned by Java.EXE
▣

Scoring & Timeline

6.7
MEDIUM · CVSS v3.1 · jordan@liggitt.net
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD11 Oct 2021 · 07:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2022/08/23/2Mailing ListThird Party Advisory
https://github.com/kubernetes-client/java/issues/1698Issue TrackingThird Party Advisory
https://groups.google.com/g/kubernetes-security-announce/c/K_pOK2WbAJkMailing ListThird Party Advisory
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