Home/CVE/Kubernetes Java client libraries in version 10.0.0 and versions prior to 9.0.1 allow writes to paths outside of the curr
CVE

CVE-2020-8570

Kubernetes Java client libraries in version 10.0.0 and versions prior to 9.0.1 allow writes to paths outside of the curr

Kubernetes Java client libraries in version 10.0.0 and versions prior to 9.0.1 allow writes to paths outside of the current directory when copying multiple files from a remote pod which sends a maliciously crafted archive. This can potentially overwrite any files on the system of the process executing the client code.

CRITICAL · CVSS 9.1 EPSS 0.01085
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules6 YARA rules0
⬡

Weakness Classification

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-23Relative Path Traversal
▤

Affected Products & Versions

2
kubernetes java< 9.0.2
kubernetes java>= 10.0.0 and < 10.0.1
▤

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 HIGH fixed in 9.0.2
◈

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

9.1
CRITICAL · 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 NVD21 Jan 2021 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/kubernetes-client/java/issues/1491Issue TrackingPatchThird Party Advisory
https://groups.google.com/g/kubernetes-security-announce/c/sd5h73sFPrgMailing ListThird Party Advisory
https://lists.apache.org/thread.html/r0c76b3d0be348f788cd947054141de0229af00c540564711e828fd40%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/r1975078e44d96f2a199aa90aa874b57a202eaf7f25f2fde6d1c44942%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/rcafa485d63550657f068775801aeb706b7a07140a8ebbdef822b3bb3%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/rdb223e1b82e3d7d8e4eaddce8dd1ab87252e3935cc41c859f49767b6%40%3Ccommits.druid.apache.org%3E
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