Apache Hadoop YARN remote code execution in ZKConfigurationStore of capacity scheduler
CVE-2021-25642

8.8HIGH

Key Information:

Vendor

Apache
Status
Apache Hadoop
Vendor
CVE Published:
25 August 2022

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-25642?

ZKConfigurationStore which is optionally used by CapacityScheduler of Apache Hadoop YARN deserializes data obtained from ZooKeeper without validation. An attacker having access to ZooKeeper can run arbitrary commands as YARN user by exploiting this. Users should upgrade to Apache Hadoop 2.10.2, 3.2.4, 3.3.4 or later (containing YARN-11126) if ZKConfigurationStore is used.

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Affected Version(s)

Apache Hadoop 2.9.0 to 2.10.1, 3.0.0-alpha1 to 3.1.4, 3.2.0 to 3.2.3, and 3.3.0 to 3.3.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-25642
Created by safe3s

References

https://lists.apache.org/thread/g6vf2h4wdgzzdgk91mqozhs58...
https://security.netapp.com/advisory/ntap-20221201-0003/

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Apache Hadoop would like to thank Liu Ximing for reporting this issue.
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