Cloud Foundry CF Deployment update for Golang



Published: 2021-08-12
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-36221
CWE-ID CWE-362
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		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) Race condition

EUVDB-ID: #VU55668

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-36221

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

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

The vulnerability exists due to a race condition in net/http/httputil ReverseProxy when handling ErrAbortHandler events. A remote attacker can trigger a race condition and crash the ReverseProxy.

Mitigation

Install update from vendor's website.

Vulnerable software versions

CF Deployment: 16.0.0 - 16.21.0

External links

http://github.com/cloudfoundry/cf-deployment/releases/tag/v16.22.0


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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