Cisco Finesse Reverse Proxy VPN-less Access to Finesse Desktop Denial of Service Vulnerability
A vulnerability in the nginx configurations that are provided as part of the VPN-less reverse proxy for Cisco Finesse could allow an unauthenticated, remote attacker to create a denial of service (DoS) condition for new and existing users who are connected through a load balancer. This vulnerability is due to improper IP address filtering by the reverse proxy. An attacker could exploit this vulnerability by sending a series of unauthenticated requests to the reverse proxy. A successful exploit could allow the attacker to cause all current traffic and subsequent requests to the reverse proxy through a load balancer to be dropped, resulting in a DoS condition. Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2023-20088US | high7.5 | — | ||
A vulnerability in the nginx configurations that are provided as part of the VPN-less reverse proxy for Cisco Finesse could allow an unauthenticated, remote attacker to create a de… | ||||
references
External citations — patches, advisories, analysis.
- Security Vulnerability Policyexternal
- Cisco Finesse Reverse Proxy VPN-less Access to Finesse Desktop Denial of Service Vulnerabilityself
- Cisco Security Vulnerability Policyexternal
- considering software upgradesexternal
- Cisco Unified Contact Center Enterprise Features Guide, Release 12.6(1) - Reverse-Proxy Configurationexternal
- Cisco Security Advisories pageexternal
- Cisco Technical Assistance Center (TAC)external
remediations (8)
- FixedCisco Finesse
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Packaged Contact Center Enterprise
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Unified Contact Center Enterprise
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Unified Contact Center Express
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - WorkaroundCisco Finesse
A workaround for this vulnerability is available for customers who cannot upgrade to a fixed release. To coordinate implementation of the workaround, contact the Cisco Technical Assistance Center (TAC) ["https://www.cisco.com/go/tac/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
- WorkaroundCisco Packaged Contact Center Enterprise
A workaround for this vulnerability is available for customers who cannot upgrade to a fixed release. To coordinate implementation of the workaround, contact the Cisco Technical Assistance Center (TAC) ["https://www.cisco.com/go/tac/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
- WorkaroundCisco Unified Contact Center Enterprise
A workaround for this vulnerability is available for customers who cannot upgrade to a fixed release. To coordinate implementation of the workaround, contact the Cisco Technical Assistance Center (TAC) ["https://www.cisco.com/go/tac/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
- WorkaroundCisco Unified Contact Center Express
A workaround for this vulnerability is available for customers who cannot upgrade to a fixed release. To coordinate implementation of the workaround, contact the Cisco Technical Assistance Center (TAC) ["https://www.cisco.com/go/tac/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
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