CVE-2018-20239 Cross-site scripting in Atlassian Application Links
Remote attackers can inject arbitrary HTML or JavaScript via the applinkStartingUrl parameter in Atlassian Application Links.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2018-20239?
CVE-2018-20239 is a medium-severity cross-site scripting vulnerability in Atlassian Crucible, published on 30 Apr 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Application Links before version 5.0.11, from version 5.1.0 before 5.2.10, from version 5.3.0 before 5.3.6, from version 5.4.0 before 5.4.12, and from version 6.0.0 before 6.0.4 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the applinkStartingUrl parameter. The product is used as a plugin in various Atlassian products where the following are affected: Confluence before version 6.15.2, Crucible before version 4.7.0, Crowd before version 3.4.3, Fisheye before version 4.7.0, Jira before version 7.13.3 and 8.x before 8.1.0.
Weakness: CWE-79
Which versions are affected by CVE-2018-20239?
It affects 8 products.
Products include Atlassian Application Links, Atlassian Confluence Data Center, Atlassian Confluence Server, Atlassian Crowd, Atlassian Crucible, Atlassian Fisheye and 2 more.
How do I fix CVE-2018-20239?
No fix has been published for CVE-2018-20239 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-2018-20239 being exploited?
There is no known exploitation of CVE-2018-20239 in the wild and no public exploit code.
Other vulnerabilities in Atlassian Crucible
- CVE-2017-18111 XML external entity in Application Links
- CVE-2017-18096 Server-side request forgery in Atlassian Application Links
- CVE-2017-16860 Cross-site scripting in Application Links
- CVE-2019-20105 Missing authorization in Application Links
- CVE-2018-5227 Cross-site scripting in Atlassian Application Links
Sources
Also known as GHSA-778g-4c8j-829w.