CVE-2023-21918 Denial of service in Database - Enterprise Edition
A high-privileged local attacker can cause a complete denial of service in Oracle Database Recovery Manager 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-2023-21918?
CVE-2023-21918 is a medium-severity denial of service vulnerability in Oracle Corporation Database - Enterprise Edition, published on 18 Apr 2023. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Vulnerability in the Oracle Database Recovery Manager component of Oracle Database Server. Supported versions that are affected are 19c and 21c. Easily exploitable vulnerability allows high privileged attacker having Local SYSDBA privilege with network access via Oracle Net to compromise Oracle Database Recovery Manager. While the vulnerability is in Oracle Database Recovery Manager, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Database Recovery Manager. CVSS 3.1 Base Score 6.8 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H).
Which versions are affected by CVE-2023-21918?
It affects 1 product.
Products include Oracle Database Recovery Manager.
How do I fix CVE-2023-21918?
No fix has been published for CVE-2023-21918 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-2023-21918 being exploited?
There is no known exploitation of CVE-2023-21918 in the wild and no public exploit code.
Sources
Also known as GHSA-23qh-6x5w-x4r7.