Denial of service in Cloud Foundry Routing (Gorouter) and CF Deployment
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-5420 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Routing Release Server applications / Virtualization software CF Deployment Server applications / Frameworks for developing and running applications |
| Vendor | Cloud Foundry Foundation |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Input validation error
EUVDB-ID: #VU46658
Risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-5420
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A remote authenticated attacker with "cf push" access can push an app that returns specially crafted HTTP responses and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsRouting Release: 0.62.0 - 0.205.0
CF Deployment: 0.0.0 - 13.14.0
External linkshttp://www.cloudfoundry.org/blog/cve-2020-5420
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
