QID 317072

Date Published: 2021-10-07

QID 317072: Cisco Web Security Appliance Proxy Service Denial of Service (DoS) Vulnerability (cisco-sa-wsa-dos-fmHdKswk)

A vulnerability in the proxy service of Cisco AsyncOS for Cisco Web Security Appliance (WSA)
could allow an unauthenticated, remote attacker to exhaust
system memory and cause a denial of service (DoS) condition on an affected device.

Affected Products
Cisco AsyncOS for Cisco WSA, both virtual and hardware appliances.
From 12.0 Prior to 12.0.3-005 From 12.5 Prior to 12.5.2-007 From 14.0 Prior to 14.0.1-014 Note:Potential detection as cannot check the workaround.

QID Detection Logic (Authenticated):
The Qid checks for the Vulnerable version of Cisco WSA in the response of "version" command.

A successful exploit could allow the attacker to cause the system to stop processing new connections, which could result in a DoS condition.

CVSS V3 rated as High - 7.5 severity.

CVSS V2 rated as High - 7.8 severity.

Solution

Customers are advised to refer to cisco-sa-wsa-dos-fmHdKswk for more information.Workaround:
There is a workaround that addresses this vulnerability. Customers can use the hidden diagnostic > PROXY > KICK command to restart the proxy process and reclaim memory.

Vendor References

cisco-sa-wsa-dos-fmHdKswk - tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-dos-fmHdKswk

CVEs related to QID 317072

CVE-2021-34698 |

Software Advisories

Advisory ID	Software	Component	Link
cisco-sa-wsa-dos-fmHdKswk			tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-dos-fmHdKswk

By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].