CVE-2023-21974 Cross-site scripting in Application Express (APEX)
A low-privileged attacker can exploit a cross-site scripting flaw in the Oracle APEX Team Calendar Plugin to take over user accounts via network access.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-21974?
CVE-2023-21974 is a critical cross-site scripting vulnerability in Oracle Corporation Application Express (APEX), published on 18 Jul 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Vulnerability in the Application Express Team Calendar Plugin product of Oracle Application Express (component: User Account). Supported versions that are affected are Application Express Team Calendar Plugin: 18.2-22.1. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Application Express Team Calendar Plugin. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Application Express Team Calendar Plugin, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Application Express Team Calendar Plugin. CVSS 3.1 Base Score 9.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H).
Which versions are affected by CVE-2023-21974?
It affects 1 product.
Products include Oracle Application Express.
How do I fix CVE-2023-21974?
No fix has been published for CVE-2023-21974 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2023-21974 being exploited?
There is no known exploitation of CVE-2023-21974 in the wild and no public exploit code.
Other vulnerabilities in Oracle Corporation Application Express (APEX)
Sources
Also known as GHSA-xw76-3w59-j73x.