CVE-2018-1000531 Auth bypass in n/a
Attackers can bypass JWT signature validation by using the 'none' algorithm, allowing unauthorized access in applications using this library.
- 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-2018-1000531?
CVE-2018-1000531 is a high-severity authentication bypass vulnerability in n/a, published on 26 Jun 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
inversoft prime-jwt version prior to commit abb0d479389a2509f939452a6767dc424bb5e6ba contains a CWE-20 vulnerability in JWTDecoder.decode that can result in an incorrect signature validation of a JWT token. This attack can be exploitable when an attacker crafts a JWT token with a valid header using 'none' as algorithm and a body to requests it be validated. This vulnerability was fixed after commit abb0d479389a2509f939452a6767dc424bb5e6ba.
Weakness: CWE-20
Which versions are affected by CVE-2018-1000531?
It affects 1 product.
Products include Inversoft Prime-Jwt.
How do I fix CVE-2018-1000531?
No fix has been published for CVE-2018-1000531 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-2018-1000531 being exploited?
There is no known exploitation of CVE-2018-1000531 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in n/a
Sources
Also known as GHSA-jc5h-g7j7-qh2w.