CVE-2019-3403 Missing authorization in Jira
Remote attackers can enumerate usernames in Jira due to an incorrect authorization check in the user picker API.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-3403?
CVE-2019-3403 is a medium-severity missing authorization vulnerability in Atlassian Jira, published on 22 May 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The /rest/api/2/user/picker rest resource in Jira before version 7.13.3, from version 8.0.0 before version 8.0.4, and from version 8.1.0 before version 8.1.1 allows remote attackers to enumerate usernames via an incorrect authorisation check.
Weakness: CWE-863
Which versions are affected by CVE-2019-3403?
It affects 2 products.
Products include Atlassian Jira, Atlassian Jira Server.
How do I fix CVE-2019-3403?
No fix has been published for CVE-2019-3403 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2019-3403 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-3403 exists.
Public exploit code: 1 Nuclei template and 2 proofs of concept on GitHub.
Other vulnerabilities in Atlassian Jira
Sources
Also known as GHSA-6jvq-7cj3-36wh.