CVE-2021-2391

published 2021-07-21

CVE-2021-2391: Vulnerability in the Oracle BI Publisher product of Oracle Fusion Middleware (component: Scheduler). Supported versions that are affected are 5.5.0.0.0…

Priority P2 70 high 8.8 CVSS 3.1

AV N AC L PR L UI N S U C H I H A H

Vulnerability in the Oracle BI Publisher product of Oracle Fusion Middleware (component: Scheduler). Supported versions that are affected are 5.5.0.0.0, 11.1.1.9.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle BI Publisher. Successful attacks of this vulnerability can result in takeover of Oracle BI Publisher. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Affected

8 ranges

Vendor	Product	Version range	Fixed in
oracle	bi_publisher	—	—
oracle	bi_publisher	—	—
oracle	bi_publisher	—	—
oracle	bi_publisher	—	—
oracle_corporation	bi_publisher	—	—
oracle_corporation	bi_publisher	—	—
oracle_corporation	bi_publisher	—	—
oracle_corporation	bi_publisher	—	—

Detection & IOCs extracted from sources · hover to see the quote

• → Target component is Oracle BI Publisher Scheduler, accessible over HTTP by low-privileged authenticated users — monitor for anomalous authenticated HTTP requests to BI Publisher Scheduler endpoints ↗
• → Successful exploitation results in full takeover (C/I/A High) — alert on unexpected process spawning or privilege escalation originating from BI Publisher Scheduler service ↗
• → Affected versions to fingerprint and prioritize for patching/detection: 5.5.0.0.0, 11.1.1.9.0, 12.2.1.3.0, 12.2.1.4.0 ↗

• · Exploitation requires network access but does NOT require remote (unauthenticated) access — attacker must have a low-privileged account; ensure authentication logs are reviewed alongside network detections ↗
• · No user interaction is required (UI:N) and attack complexity is low (AC:L), meaning exploitation is straightforward once an attacker has any valid credential ↗

CVSS provenance

nvd v3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd v2.0 9.0 CRITICAL AV:N/AC:L/Au:S/C:C/I:C/A:C

vendor_oracle 8.8 HIGH

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