Input validation error in Oracle Application Express
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-26272 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Oracle Application Express Web applications / Remote management & hosting panels |
| Vendor | Oracle |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Input validation error
EUVDB-ID: #VU50054
Risk: Low
CVSSv3.1: 4.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-26272
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a regular expression denial of service (ReDoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can trick the victim to paste a specially crafted URL-like text into the editor, and then press Enter or Space (in the Autolink plugin) and perform a regular expression denial of service (ReDoS) attack.
Install update from vendor's website.
Vulnerable software versionsOracle Application Express: before 21.1.0
External linkshttp://www.oracle.com/security-alerts/cpuoct2021.html?534662
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
