Input validation

In versions =8.5.1 of jsonwebtoken library, lack of algorithm definition in the jwt.verify function can lead to signature validation bypass due to defaulting to the none algorithm for signature verification. Users are affected if you do not specify algorithms in the jwt.verify function. This issu...

jsonwebtoken 数据伪造问题漏洞

jsonwebtoken is Auth0 open source implementation of a JSON Web token . jsonwebtoken version 8.5.1 and earlier versions of data forgery vulnerability , the vulnerability stems from the default use of the "none" algorithm for signature verification , jwt.verify function in the lack of algorithm...

Key confusion through non-blocklisted public key formats

Impact What kind of vulnerability is it? Who is impacted? Disclosed by Aapo Oksman Senior Security Specialist, Nixu Corporation. PyJWT supports multiple different JWT signing algorithms. With JWT, an attacker submitting the JWT token can choose the used signing algorithm. The PyJWT library requir...

Pac4j token validation bypass if OpenID Connect provider supports none algorithm

If an OpenID Connect provider supports the “none” algorithm i.e., tokens with no signature, pac4j v5.3.0 and prior does not refuse it without an explicit configuration on its side or for the “idtoken” response type which is not secure and violates the OpenID Core Specification. The "none" algorit...

GHSA-XHW6-HJC9-679M Pac4j token validation bypass if OpenID Connect provider supports none algorithm

If an OpenID Connect provider supports the “none” algorithm i.e., tokens with no signature, pac4j v5.3.0 and prior does not refuse it without an explicit configuration on its side or for the “idtoken” response type which is not secure and violates the OpenID Core Specification. The "none" algorit...

Insecure Token

Pac4j has insecure token. The vulnerability exists due to an insecure validation of ID token with "none" algorithm allowing an attacker to bypass the token validation by injecting a maliciously crafted ID token by setting the alg key = "none"...

CVE-2021-44878

If an OpenID Connect provider supports the "none" algorithm i.e., tokens with no signature, pac4j v5.3.0 and prior does not refuse it without an explicit configuration on its side or for the "idtoken" response type which is not secure and violates the OpenID Core Specification. The "none" algorit...

CVE-2021-44878

If an OpenID Connect provider supports the "none" algorithm i.e., tokens with no signature, pac4j v5.3.0 and prior does not refuse it without an explicit configuration on its side or for the "idtoken" response type which is not secure and violates the OpenID Core Specification. The "none" algorit...

CVE-2021-44878

If an OpenID Connect provider supports the "none" algorithm i.e., tokens with no signature, pac4j v5.3.0 and prior does not refuse it without an explicit configuration on its side or for the "idtoken" response type which is not secure and violates the OpenID Core Specification. The "none" algorit...

Broken User Authentication☝️ — What you need to know

Broken User Authentication☝️ — What you need to know Introduction API2:Broken User Authentication What is Broken User Authentication? Broken User Authentication can manifest in several issues. Whenever we come across an API endpoint that handles authentication we need to be extra careful since...

Multiple cryptographic issues in Python oic

Impact Client implementations using this library Issues 1 The IdToken signature algorithm was not checked automatically, but only if the expected algorithm was passed in as a kwarg. 2 JWA none algorithm was allowed in all flows. 3 oic.consumer.Consumer.parseauthz returns an unverified IdToken. Th...

GHSA-4FJV-PMHG-3RFG Multiple cryptographic issues in Python oic

Impact Client implementations using this library Issues 1 The IdToken signature algorithm was not checked automatically, but only if the expected algorithm was passed in as a kwarg. 2 JWA none algorithm was allowed in all flows. 3 oic.consumer.Consumer.parseauthz returns an unverified IdToken. Th...

Cipher Downgrade Attack

oic is vulnerable to cipher downgrade attacks. The vulnerability exists as the IdToken signature algorithm is not checked automatically, and that the JWA none algorithm is always allowed, and that the IdToken returned from oic.consumer.Consumer.parseauthz is not verified, and the iat claim is not...

PYSEC-2020-69

Python oic is a Python OpenID Connect implementation. In Python oic before version 1.2.1, there are several related cryptographic issues affecting client implementations that use the library. The issues are: 1 The IdToken signature algorithm was not checked automatically, but only if the expected...

Design/Logic Flaw

Python oic is a Python OpenID Connect implementation. In Python oic before version 1.2.1, there are several related cryptographic issues affecting client implementations that use the library. The issues are: 1 The IdToken signature algorithm was not checked automatically, but only if the expected...

PT-2020-16372 · Python · Python Oic

Name of the Vulnerable Software and Affected Versions: Python oic versions prior to 1.2.1 Description: The issue affects client implementations using the Python oic library, a Python OpenID Connect implementation. There are several related cryptographic issues: 1 The IdToken signature algorithm w...

TokenBreaker - JSON RSA To HMAC And None Algorithm Vulnerability POC

Token Breaker is focused on 2 particular vulnerability related to JWT tokens. None Algorithm RSAtoHMAC Refer to this link about insights of the vulnerability and how an attacker can forge the tokens Try out this vulnerability here TheNone Usage usage: TheNone.py -h -t TOKEN TokenBreaker:...

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 usi...

Design/Logic Flaw

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 usi...

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 usi...