CVE-2019-19324 Auth bypass in n/a
The cjwt library incorrectly maps unsupported algorithms to 'none', allowing attackers to bypass authentication by submitting untrusted JWTs.
- 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-2019-19324?
CVE-2019-19324 is a high-severity authentication bypass vulnerability in n/a, published on 20 Mar 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Xmidt cjwt through 1.0.1 before 2019-11-25 maps unsupported algorithms to alg=none, which sometimes leads to untrusted accidental JWT acceptance.
Weakness: CWE-670
Which versions are affected by CVE-2019-19324?
It affects 1 product.
Products include Xmidt Cjwt.
How do I fix CVE-2019-19324?
No fix has been published for CVE-2019-19324 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2019-19324 being exploited?
There is no known exploitation of CVE-2019-19324 in the wild and no public exploit code.
Sources
Also known as GHSA-7w7c-8h3c-g577.