Improper input validation in Inversoft Prime-Jwt
CVE-2018-1000531
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.016 (73.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Inversoft Prime-jwt
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2018-1000531?
- CVE-2018-1000531 is a high-severity vulnerability in Inversoft Prime-Jwt, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2018-06-26.
- How severe is CVE-2018-1000531?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-1000531 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.