CVE-2019-15259 Cisco Unified Contact Center Express HTTP Response Splitting Vulnerability

Medium 6.1 Published 2 Oct 2019 Updated 21 Nov 2024

Unauthenticated attackers can exploit HTTP response splitting in Cisco UCCX to perform cross-site scripting and cache poisoning attacks.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2019-15259?

CVE-2019-15259 is a medium-severity cross-site scripting vulnerability in Cisco Unified Contact Center Express, published on 2 Oct 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A vulnerability in Cisco Unified Contact Center Express (UCCX) Software could allow an unauthenticated, remote attacker to conduct an HTTP response splitting attack. The vulnerability is due to insufficient input validation of some parameters that are passed to the web server of the affected system. An attacker could exploit this vulnerability by convincing a user to follow a malicious link or by intercepting a user request on an affected device. A successful exploit could allow the attacker to perform cross-site scripting attacks, web cache poisoning, access sensitive browser-based information, and similar exploits.

Weakness: CWE-74, CWE-113

Which versions are affected by CVE-2019-15259?

It affects 1 product.

Products include Cisco Unified Contact Center Express.

How do I fix CVE-2019-15259?

No fix has been published for CVE-2019-15259 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2019-15259 being exploited?

There is no known exploitation of CVE-2019-15259 in the wild and no public exploit code.

Sources

Also known as GHSA-cmh5-cf9g-7v34.