CVE-2021-34706 Cisco Identity Services Engine XML External Entity Injection Vulnerability

Medium 6.4 Published 6 Oct 2021 Updated 7 Nov 2024

Authenticated attackers can exploit XXE in Cisco ISE to read local files or perform SSRF, leading to information disclosure.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-34706?

CVE-2021-34706 is a medium-severity vulnerability in Cisco Identity Services Engine, published on 6 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to access sensitive information or conduct a server-side request forgery (SSRF) attack through an affected device. This vulnerability is due to improper handling of XML External Entity (XXE) entries when parsing certain XML files. An attacker could exploit this vulnerability by uploading a crafted XML file that contains references to external entities. A successful exploit could allow the attacker to retrieve files from the local system, resulting in the disclosure of sensitive information, or cause the web application to perform arbitrary HTTP requests on behalf of the attacker.

Weakness: CWE-611

Which versions are affected by CVE-2021-34706?

It affects 1 product.

Products include Cisco Identity Services Engine.

How do I fix CVE-2021-34706?

No fix has been published for CVE-2021-34706 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-34706 being exploited?

There is no known exploitation of CVE-2021-34706 in the wild and no public exploit code.

All Cisco Identity Services Engine vulnerabilities

Sources

Also known as GHSA-gjrq-r2pc-24vf.