CVE-2020-4024 Cross-site scripting in Jira Server and Data Center
Remote attackers can inject arbitrary HTML or JavaScript via malicious attachments, potentially leading to code execution or account takeover in Jira Server.
- 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-2020-4024?
CVE-2020-4024 is a medium-severity cross-site scripting vulnerability in Atlassian Jira, published on 1 Jul 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
The attachment download resource in Atlassian Jira Server and Data Center before 8.5.5, and from 8.6.0 before 8.8.2, and from 8.9.0 before 8.9.1 allows remote attackers to inject arbitrary HTML or JavaScript via a Cross-Site Scripting (XSS) vulnerability issue attachments with a vnd.wap.xhtml+xml content type.
Weakness: CWE-79
Which versions are affected by CVE-2020-4024?
It affects 4 products.
Products include Atlassian Jira, Atlassian Jira Data Center, Atlassian Jira Server, Atlassian Jira Software Data Center.
How do I fix CVE-2020-4024?
No fix has been published for CVE-2020-4024 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-2020-4024 being exploited?
There is no known exploitation of CVE-2020-4024 in the wild and no public exploit code.
Other vulnerabilities in Atlassian Jira
Sources
Also known as GHSA-h8h7-522c-qwmm.