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
 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

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-26272

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The 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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Oracle Application Express: before 21.1.0

CPE2.3 External links

https://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.



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