CVE-2021-35551 Denial of service in Database - Enterprise Edition
High-privileged attackers can cause a complete denial of service and modify data in Oracle Database Server via network access.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-35551?
CVE-2021-35551 is a medium-severity denial of service vulnerability in Oracle Database, published on 20 Oct 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Vulnerability in the RDBMS Security component of Oracle Database Server. Supported versions that are affected are 12.2.0.1, 19c and 21c. Easily exploitable vulnerability allows high privileged attacker having DBA privilege with network access via Oracle Net to compromise RDBMS Security. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of RDBMS Security as well as unauthorized update, insert or delete access to some of RDBMS Security accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).
Which versions are affected by CVE-2021-35551?
It affects 1 product.
Products include Oracle Database.
How do I fix CVE-2021-35551?
No fix has been published for CVE-2021-35551 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-35551 being exploited?
There is no known exploitation of CVE-2021-35551 in the wild and no public exploit code.
Other vulnerabilities in Oracle Database
Sources
Also known as GHSA-2p2x-x4c8-xrmc.