CVE-2019-3803 Concourse includes token in CLI authentication callback
Attackers can steal user access tokens from browser history to impersonate users and access Concourse CI resources.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2019-3803?
CVE-2019-3803 is a medium-severity vulnerability in Pivotal Concourse, published on 12 Jan 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Pivotal Concourse, all versions prior to 4.2.2, puts the user access token in a url during the login flow. A remote attacker who gains access to a user's browser history could obtain the access token and use it to authenticate as the user.
Weakness: CWE-200
Which versions are affected by CVE-2019-3803?
It affects 1 product.
Products include Pivotal Software Concourse.
How do I fix CVE-2019-3803?
No fix has been published for CVE-2019-3803 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-3803 being exploited?
There is no known exploitation of CVE-2019-3803 in the wild and no public exploit code.
Other vulnerabilities in Pivotal Concourse
- CVE-2020-5415 Concourse's GitLab auth allows impersonation
- CVE-2020-5409 Concourse Open Redirect in the /sky/login endpoint
- CVE-2018-15798 Pivotal Concourse allows malicious redirect urls on login
- CVE-2018-1227 Supply chain in Concourse CI: As of 2018-03-13, Pivotal does not believe that any resources or builds of Concourse have been compromised.
- CVE-2019-3792 Concourse 5.0.0 SQL Injection vulnerability
Sources
Also known as GHSA-9xg8-22rr-c6vh.