THREATPORT/VULNERABILITY/CVE-2021-21348
MEDIUM SEVERITY

CVE-2021-21348

Oncommand Insight vulnerability

CVSS
5.3
EPSS
13.8%
EPSS pct
96th
Exploited
No known
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker to occupy a thread that consumes maximum CPU time and will never return. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.
Affected vendor
Netapp
Affected product
Oncommand Insight
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness type (CWE)
  • CWE-400 — Uncontrolled Resource Consumption
  • CWE-502 — Deserialization of Untrusted Data
Published
2021-03-23

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring no privileges, user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 13.8% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2021-21348

  • Confirm whether Netapp Oncommand Insight is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-21348.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-21348

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-21348 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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