Deserialization in Apache Hadoop
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.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.023 (83.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.023 · change: +0.001
Affected products
- Apache Hadoop
- Apache Software Foundation Hadoop — versions 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
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.apache.org/thread/g6vf2h4wdgzzdgk91mqozhs58wotq150 (Mailing List, Vendor Advisory)
- security.netapp.com/advisory/ntap-20221201-0003/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-25642?
- CVE-2021-25642 is a high-severity vulnerability in Apache Hadoop, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2022-08-25.
- How severe is CVE-2021-25642?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-25642 known to be exploited?
- 15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.