Resource exhaustion in NetApp Hci
CVE-2021-3737
A flaw was found in python. An improperly handled HTTP response in the HTTP client code of python may allow a remote attacker, who controls the HTTP server, to make the client script enter an infinite loop, consuming CPU time. The highest threat from this vulnerability is to system availability.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.132 (96.4th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.116 · newest: 0.132 · change: +0.016
Affected products
- NetApp Hci
- NetApp Management Services For Element Software
- NetApp Xcp SMB
- NetApp Ontap Select Deploy Administration Utility
- NetApp Xcp Nfs
- Oracle Communications Cloud Native Core Binding Support Function — versions 22.1.3
- Oracle Communications Cloud Native Core Network Exposure Function — versions 22.1.1
- Oracle Communications Cloud Native Core Policy — versions 22.2.0
- Python
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugs.python.org/issue44022 (Exploit, Issue Tracking, Vendor Advisory)
- github.com/python/cpython/pull/25916 (Patch, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- github.com/python/cpython/pull/26503 (Patch, Third Party Advisory)
- ubuntu.com/security/CVE-2021-3737 (Patch, Third Party Advisory)
- www.oracle.com/security-alerts/cpujul2022.html (Patch, Third Party Advisory)
- python-security.readthedocs.io/vuln/urllib-100-continue-loop.html (Patch, Third Party Advisory)
- security.netapp.com/advisory/ntap-20220407-0009/ (Third Party Advisory)
- lists.debian.org/debian-lts-announce/2023/05/msg00024.html (mailing-list)
- lists.debian.org/debian-lts-announce/2023/06/msg00039.html (mailing-list)
Frequently asked questions
- What is CVE-2021-3737?
- CVE-2021-3737 is a high-severity vulnerability in NetApp Hci, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2022-03-04.
- How severe is CVE-2021-3737?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-3737 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.