Multiple vulnerabilities in Oracle WebCenter Portal

Published: 2021-07-27

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-28052 CVE-2021-21345
CWE-ID	CWE-1025 CWE-502
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	Oracle WebCenter Portal Web applications / CRM systems
Vendor	Oracle

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Comparison using wrong factors

EUVDB-ID: #VU49086

Risk: High

CVSSv3.1: 7.3 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-28052

CWE-ID: CWE-1025 - Comparison using wrong factors

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to brute-force password hashes.

The vulnerability exists due to comparison error in OpenBSDBCrypt.checkPassword() function in core/src/main/java/org/bouncycastle/crypto/generators/OpenBSDBCrypt.java when matching passwords with hashes. A remote attacker can pass an incorrect password that will be accepted as a valid one by the library, bypass authentication process and gain unauthorized access to the application that uses vulnerable version of Bouncy Castle.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Oracle WebCenter Portal: 11.1.1.9.0 - 12.2.1.4.0

External links

http://www.oracle.com/security-alerts/cpujul2021.html?540358

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. However, proof of concept for this vulnerability is available.

2) Deserialization of Untrusted Data

EUVDB-ID: #VU52562

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21345

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No