Input validation error in Oracle Communications Evolved Communications Application Server



Published: 2020-04-21
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-16943
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Oracle Communications Evolved Communications Application Server
Server applications / Application servers

Vendor Oracle

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU21593

Risk: Medium

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-16943

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected application.

The vulnerability exists due to a Polymorphic Typing issue when processing JSON requests  within the com.p6spy.engine.spy.P6DataSource component. A remote attacker can send specially crafted JSON data to an RMI service endpoint and execute arbitrary code on he system.

Successful exploitation of the vulnerability requires that Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint, the service has has the p6spy (3.8.6) jar in the classpath, and an attacker can find an RMI service endpoint to send requests to.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Oracle Communications Evolved Communications Application Server: 7.1


CPE2.3 External links

http://www.oracle.com/security-alerts/cpuapr2020.html?534786

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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