Cisco Elastic Services Controller REST API Authentication Bypass Vulnerability Threat Alert

Cisco Elastic Services Controller REST API Authentication Bypass Vulnerability Threat Alert

maio 17, 2019 | Adeline Zhang


Cisco has released a security advisory, announcing the existence of a REST API authentication bypass vulnerability (CVE-2019-1867) in Cisco Elastic Services Controller (ESC). This vulnerability is due to improper validation of API requests. An attacker could exploit this vulnerability by sending a crafted request to the REST API. A successful exploit could allow an unauthenticated, remote attacker to execute arbitrary actions through the REST API with administrative privileges on an affected system.

CVSS 3.0 score:

Base 10.0 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:X/RL:X/RC:X

For details about this vulnerability, please visit the following link:

Affected Versions

  • Cisco Elastic Services Controller Release 4.1, 4.2, 4.3, and 4.4 when the REST API is enabled.
  • The REST API is disabled by default.

Unaffected Versions

  • Cisco Elastic Services Controller Release < 4.1
  • Cisco Elastic Services Controller Release 4.5


Cisco has released Cisco Elastic Services Controller 4.5 to fix the preceding vulnerability. Affected users are advised to upgrade as soon as possible

For remediation details, refer to the security advisory at the following link:


This advisory is only used to describe a potential risk. NSFOCUS does not provide any commitment or promise on this advisory. NSFOCUS and the author will not bear any liability for any direct and/or indirect consequences and losses caused by transmitting and/or using this advisory. NSFOCUS reserves all the rights to modify and interpret this advisory. Please include this statement paragraph when reproducing or transferring this advisory. Do not modify this advisory, add/delete any information to/from it, or use this advisory for commercial purposes without permission from NSFOCUS.


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