CVE-2021-35587
Oracle Fusion Middleware Unspecified Vulnerability
Oracle Fusion Middleware
Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: OpenSSO Agent). Supported versions that are affected are 11.1.2.3.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Access Manager. Successful attacks of this vulnerability can result in takeover of Oracle Access Manager. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 28 November 2022. US federal agencies were required to remediate it by 19 December 2022.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 96.3%, which is higher than 99.9% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Frequently asked questions
Is CVE-2021-35587 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2021-35587.
What does CVE-2021-35587 affect?
CVE-2021-35587 affects Oracle Fusion Middleware. Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: OpenSSO Agent). Supported versions that are affected are 11.1.2.3.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Access Manager. Successful attacks of this vulnerability can result in takeover of Oracle Access Manager. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
How severe is CVE-2021-35587?
CVE-2021-35587 is rated CRITICAL with a CVSS base score of 9.8. EPSS puts the probability of exploitation in the next 30 days at 96.3%, higher than 99.9% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 19 December 2022.
How should organisations respond to CVE-2021-35587?
Apply the vendor patch for Oracle Fusion Middleware as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.