Resource exhaustion in Apache Nifi
CVE-2020-27223
In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.2 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.780 (99.6th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.779 · newest: 0.780 · change: +0.001
Affected products
- Apache Nifi — versions 1.13.0
- Apache Solr — versions 8.8.1
- Apache Spark — versions 3.1.1
- Eclipse Jetty — versions 9.4.6, 9.4.36, 10.0.0
- NetApp Element Plug-In For Vcenter Server
- NetApp E-Series Santricity OS Controller
- NetApp E-Series Santricity Web Services
- NetApp Hci
- NetApp Hci Management Node
- NetApp Management Services For Element Software
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugs.eclipse.org/bugs/show_bug.cgi (Vendor Advisory)
- github.com/eclipse/jetty.project/security/advisories/GHSA-m394-8rww-3jr7 (Third Party Advisory)
- lists.apache.org/thread.html/r5612dc69e1f79c421faf9764ffbc92591e2a69ea417c04cba… (mailing-list)
- lists.apache.org/thread.html/rd8e24a3e482e5984bc8c5492dc790413e4fdc1234e3debb94… (mailing-list)
- lists.apache.org/thread.html/r35ab810c0f3016b3fd3a3fa9088a2d2781b354a810780ce74… (mailing-list)
- lists.apache.org/thread.html/r2c2c7b2971360fb946bbf062c58d7245927dd1ce9150fc998… (mailing-list)
- lists.apache.org/thread.html/r1b7ed296a865e3f1337a96ee9cd51f6d154d881a30da36020… (mailing-list)
- lists.apache.org/thread.html/rc052fd4e9e9c01bead74c0b5680355ea5dc3b72d46f253cb6… (mailing-list)
- lists.apache.org/thread.html/rdd6c47321db1bfe12c68a898765bf3b6f97e2afa6a501254e… (mailing-list)
- lists.apache.org/thread.html/ra47a26c008487b0a739a368c846e168de06c3cd118d31eced… (mailing-list)
Frequently asked questions
- What is CVE-2020-27223?
- CVE-2020-27223 is a medium-severity vulnerability in Apache Nifi, classified under Inefficient Algorithmic Complexity. CVSS score: 5.2/10. Published 2021-02-26.
- How severe is CVE-2020-27223?
- Medium severity. CVSS v3 base score is 5.2 out of 10.
- Is CVE-2020-27223 known to be exploited?
- 15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.