CVE-2020-9492

In Apache Hadoop 3.2.0 to 3.2.1, 3.0.0-alpha1 to 3.1.3, and 2.0.0-alpha to 2.10.0, WebHDFS client might send SPNEGO authorization header to remote URL without proper verification.

Published: 2021-01-26 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-9492 is rated Moderate Risk (41/100): CVSS High severity, with low exploitation likelihood (EPSS 0.11%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-9492

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 6.02% 0.11% -5.90%
2 2025-11-18 0.11% 6.02% +5.90%
3 2025-03-30 — 0.11% —

Full EPSS history (20 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-9492

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
6.5 2.0 MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 6.4 [email protected]

Weakness enumeration for CVE-2020-9492

GitHub Security Advisory for CVE-2020-9492

GHSA-f8vc-wfc8-hxqh · Severity: high · Ecosystem: maven — Improper Privilege Management in Apache Hadoop

OS Trackers for CVE-2020-9492

vendor priority summary link
redhat high — https://access.redhat.com/security/cve/CVE-2020-9492
suse medium CVE-2020-9492 severity moderate: SUSE including 1 source package names (hadoop), 2 product×package rows across 2 product lines (SUSE Manager Server Module 4.0, SUSE Manager Server Module 4.1): Known Not Affected 2. https://www.suse.com/security/cve/CVE-2020-9492/

Affected software / configurations for CVE-2020-9492

Vendor Product Version Raw CPE
apache hadoop >= 2.0.0, <= 2.10.0 cpe:2.3:a:apache:hadoop:*:*:*:*:*:*:*:*
apache hadoop >= 3.0.0, <= 3.1.3 cpe:2.3:a:apache:hadoop:*:*:*:*:*:*:*:*
apache hadoop >= 3.2.0, <= 3.2.1 cpe:2.3:a:apache:hadoop:*:*:*:*:*:*:*:*
apache solr 8.6.0 cpe:2.3:a:apache:solr:8.6.0:*:*:*:*:*:*:*
apache solr 8.6.2 cpe:2.3:a:apache:solr:8.6.2:*:*:*:*:*:*:*
oracle financial_services_crime_and_compliance_management_studio 8.0.8.2.0 cpe:2.3:a:oracle:financial_services_crime_and_compliance_management_studio:8.0.8.2.0:*:*:*:*:*:*:*
oracle financial_services_crime_and_compliance_management_studio 8.0.8.3.0 cpe:2.3:a:oracle:financial_services_crime_and_compliance_management_studio:8.0.8.3.0:*:*:*:*:*:*:*

References for CVE-2020-9492

URL Tags
https://lists.apache.org/thread.html/r0a534f1cde7555f7208e9f9b791c1ab396d215eaaef283b3a9153429%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/r49c9ab444ab1107c6a8be8a0d66602dec32a16d96c2631fec8d309fb%40%3Cissues.solr.apache.org%3E
https://lists.apache.org/thread.html/r4a57de5215494c35c8304cf114be75d42df7abc6c0c54bf163c3e370%40%3Cissues.solr.apache.org%3E
https://lists.apache.org/thread.html/r513758942356ccd0d14538ba18a09903fc72716d74be1cb727ea91ff%40%3Cgeneral.hadoop.apache.org%3E Mailing List Vendor Advisory
https://lists.apache.org/thread.html/r6341f2a468ced8872a71997aa1786ce036242413484f0fa68dc9ca02%40%3Cissues.solr.apache.org%3E
https://lists.apache.org/thread.html/r6c2fa7949738e9d39606f1d7cd890c93a2633e3357c9aeaf886ea9a6%40%3Cissues.solr.apache.org%3E
https://lists.apache.org/thread.html/r79201a209df9a4e7f761e537434131b4e39eabec4369a7d668904df4%40%3Cissues.solr.apache.org%3E
https://lists.apache.org/thread.html/r79323adac584edab99fd5e4b52a013844b784a5d4b600da0662b33d6%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/r9328eb49305e4cacc80e182bfd8a2efd8e640d940e24f5bfd7d5cb26%40%3Cissues.solr.apache.org%3E
https://lists.apache.org/thread.html/r941e9be04efe0f455d20aeac88516c0848decd7e7b1d93d5687060f4%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/rb12afaa421d483863c4175e42e5dbd0673917a3cff73f3fca4f8275f%40%3Cissues.solr.apache.org%3E
https://lists.apache.org/thread.html/rc0057ebf32b646ab47f7f5744a8948332e015c39044cbb9d87ea76cd%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/rca4516b00b55b347905df45e5d0432186248223f30497db87aba8710%40%3Cannounce.apache.org%3E
https://lists.apache.org/thread.html/re4129c6b9e0410848bbd3761187ce9c19bc1cd491037b253007df99e%40%3Cissues.solr.apache.org%3E
https://security.netapp.com/advisory/ntap-20210304-0001/ Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html Patch Third Party Advisory
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