5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
0.001 Low
EPSS
Percentile
34.1%
High
Cloud Foundry Foundation
A bug in the gorouter process for the versions from 0.262.0 and prior to 0.266.0 of routing-release can lead to a denial of service of applications hosted on Cloud Foundry. Under the right circumstances, when client connections are closed prematurely, gorouter marks the currently selected backend as failed and removes it from the routing pool. It then retries up to two more times on different backends, also marking them as failed and removing them from the routing pool. When done repeatedly, this can remove all backends from an applicationβs route.
This issue may be mitigated in some environments, depending on the configuration of any load balancing/proxying layers present between the client + gorouter.
Severity is high unless otherwise noted.
Users of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:
This issue was responsibly reported by Geoff Franks.
2023-05-22: Initial vulnerability report published.
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
0.001 Low
EPSS
Percentile
34.1%