CVE-2023-20088
highPriorität · verfolgen · 30EPSS 0.008 · 56. PerzentilDEEURUUSEPSS · bewertet 2026-10-27
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.
Behebungen
Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.
Ein Hersteller-Fix ist verfügbar.
- BehobenCisco Finessecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco Packaged Contact Center Enterprisecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco Unified Contact Center Enterprisecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco Unified Contact Center Expresscisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - WorkaroundCisco Finessecisco_csaf
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 Enterprisecisco_csaf
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 Enterprisecisco_csaf
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 Expresscisco_csaf
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.
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 5.3–7.5
SSVC
Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.
schwächen
Die CWE-Schwächeklassen, zu denen dies gehört.
betroffene Produkte (11)
Betroffene Produkte und Versionsbereiche.
- Cisco Unified Contact Center Enterprisealle Versionencert_bundDEcpe:/a:cisco:unified_contact_center_enterprise:-
- Cisco Unified Contact Center Express (UCCX)alle Versionencert_bundDEcpe:/a:cisco:unified_contact_center_express:10.0%281%29
Advisories (2)
Hersteller- und Ökosystem-Meldungen dazu.
- WID-SEC-W-2023-0534Cisco Finesse: Schwachstelle ermöglicht Denial of ServiceDeutsch2023-03-01csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Cisco Finesse, Cisco Unified Contact Center Express (UCCX) und Cisco Unified Contact Center Enterprise ausnutzen, um einen Denial of Service Angriff durchzuführen.
- cisco-sa-finesse-proxy-dos-vY5dQhrVCisco Finesse Reverse Proxy VPN-less Access to Finesse Desktop Denial of Service Vulnerability2023-03-01csaf · cisco_csafUS
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.
auch bekannt als (4)
Weitere Namen und Kennungen dieser Entität.
quellen
Welche Quellen diesen Datensatz belegen und wann.
Referenzen (5)
Externe Belege — Patches, Meldungen, Analysen.
- https://cxsecurity.com/cveshow/CVE-2023-20088/cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2023-20088cnnvd
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-finesse-proxy-dos-vY5dQhrVcnnvd
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-finesse-proxy-dos-vY5dQhrVenisa_euvd
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-finesse-proxy-dos-vY5dQhrVVendor Advisorynvd
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