CVE-2017-18096 Server-side request forgery in Atlassian Application Links

High 7.2 Published 4 Apr 2018 Updated 16 Sep 2024

Administrators can exploit SSRF in Atlassian Application Links to access internal network resources and cloud metadata credentials.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2017-18096?

CVE-2017-18096 is a high-severity server-side request forgery vulnerability in Atlassian Application Links, published on 4 Apr 2018. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

The OAuth status rest resource in Atlassian Application Links before version 5.2.7, from 5.3.0 before 5.3.4 and from 5.4.0 before 5.4.3 allows remote attackers with administrative rights to access the content of internal network resources via a Server Side Request Forgery (SSRF) by creating an OAuth application link to a location they control and then redirecting access from the linked location's OAuth status rest resource to an internal location. When running in an environment like Amazon EC2, this flaw maybe used to access to a metadata resource that provides access credentials and other potentially confidential information.

Weakness: CWE-918

Which versions are affected by CVE-2017-18096?

It affects 1 product.

Products include Atlassian Application Links.

How do I fix CVE-2017-18096?

No fix has been published for CVE-2017-18096 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2017-18096 being exploited?

There is no known exploitation of CVE-2017-18096 in the wild and no public exploit code.

Sources

Also known as GHSA-3jwg-839p-m5gf.