Multiple vulnerabilities in Pivotal Reactor Netty

Published: 2020-03-04

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-5403 CVE-2020-5404
CWE-ID	CWE-20 CWE-522
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Reactor Netty Universal components / Libraries / Libraries used by multiple products
Vendor	Pivotal

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU25771

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-5403

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the affected software is exposed to a URISyntaxException that causes the connection to be closed prematurely instead of producing a 400 response. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Reactor Netty: 0.9.3 - 0.9.4

External links

http://pivotal.io/security/cve-2020-5403

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.

2) Insufficiently protected credentials

EUVDB-ID: #VU25772

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-5404

CWE-ID: CWE-522 - Insufficiently Protected Credentials

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to sensitive information on the target system.

The vulnerability exists due to insufficiently protected credentials in the HttpClient. A remote user can cause a credentials leak during a redirect to a different domain.