CVE-2019-0870 Cross-site scripting in Azure DevOps Server

Medium 6.1 Published 9 Apr 2019 Updated 4 Aug 2024

Attackers can execute arbitrary scripts in user browsers via unsanitized input in Azure DevOps Server and Team Foundation Server.

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-2019-0870?

CVE-2019-0870 is a medium-severity cross-site scripting vulnerability in Microsoft Azure DevOps Server, published on 9 Apr 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 Cross-site Scripting (XSS) vulnerability exists when Azure DevOps Server and Team Foundation Server do not properly sanitize user provided input, aka 'Azure DevOps Server and Team Foundation Server Cross-site Scripting Vulnerability'. This CVE ID is unique from CVE-2019-0866, CVE-2019-0867, CVE-2019-0868, CVE-2019-0871.

Weakness: CWE-79

Which versions are affected by CVE-2019-0870?

It affects 2 products.

Products include Microsoft Azure Devops Server, Microsoft Team Foundation Server.

How do I fix CVE-2019-0870?

No fix has been published for CVE-2019-0870 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-2019-0870 being exploited?

There is no known exploitation of CVE-2019-0870 in the wild and no public exploit code.

Sources

Also known as GHSA-p34c-hp83-p85p.