z-bool

5 exploits Active since Jan 2018
CVE-2020-28042 NOMISEC MEDIUM WORKING POC
ServiceStack < 5.9.2 - JWT Signature Verification Bypass
ServiceStack before 5.9.2 mishandles JWT signature verification unless an application has a custom ValidateToken function that establishes a valid minimum length for a signature.
282 stars
CVSS 5.3
CVE-2018-0114 NOMISEC HIGH WORKING POC
Cisco node-jose < 0.11.0 - Unauthenticated Token Re-signing via Embedded Public Key
A vulnerability in the Cisco node-jose open source library before 0.11.0 could allow an unauthenticated, remote attacker to re-sign tokens using a key that is embedded within the token. The vulnerability is due to node-jose following the JSON Web Signature (JWS) standard for JSON Web Tokens (JWTs). This standard specifies that a JSON Web Key (JWK) representing a public key can be embedded within the header of a JWS. This public key is then trusted for verification. An attacker could exploit this by forging valid JWS objects by removing the original signature, adding a new public key to the header, and then signing the object using the (attacker-owned) private key associated with the public key embedded in that JWS header.
282 stars
CVSS 7.5
CVE-2015-9235 NOMISEC CRITICAL WORKING POC
jsonwebtoken < 4.2.2 - Authentication Bypass via Algorithm Confusion
In jsonwebtoken node module before 4.2.2 it is possible for an attacker to bypass verification when a token digitally signed with an asymmetric key (RS/ES family) of algorithms but instead the attacker send a token digitally signed with a symmetric algorithm (HS* family).
282 stars
CVSS 9.8
CVE-2016-10555 NOMISEC MEDIUM WORKING POC
jwt-simple < 0.3.0 - Unauthenticated Algorithm Substitution via jwt.decode()
Since "algorithm" isn't enforced in jwt.decode()in jwt-simple 0.3.0 and earlier, a malicious user could choose what algorithm is sent sent to the server. If the server is expecting RSA but is sent HMAC-SHA with RSA's public key, the server will think the public key is actually an HMAC private key. This could be used to forge any data an attacker wants.
282 stars
CVSS 6.5
CVE-2022-40684 NOMISEC CRITICAL WORKING POC
Fortinet Fortiproxy < 7.0.7 - Authentication Bypass
An authentication bypass using an alternate path or channel [CWE-288] in Fortinet FortiOS version 7.2.0 through 7.2.1 and 7.0.0 through 7.0.6, FortiProxy version 7.2.0 and version 7.0.0 through 7.0.6 and FortiSwitchManager version 7.2.0 and 7.0.0 allows an unauthenticated atttacker to perform operations on the administrative interface via specially crafted HTTP or HTTPS requests.
5 stars
CVSS 9.8