CVE-2019-18848

CVE-2019-18848 affects the rubygem-json-jwt library for Ruby, where versions prior to 1.11.0 fail to enforce an element count when splitting a JWE string. This is documented across multiple advisories (Debian DLA-2390-1, openSUSE/SUSE advisories) indicating the issue and references to upgrading t...

CVE-2019-18848

The json-jwt gem before 1.11.0 for Ruby lacks an element count during the splitting of a JWE string...

CVE-2019-18848

The json-jwt gem before 1.11.0 for Ruby lacks an element count during the splitting of a JWE string...

PT-2019-15698 · Ruby · Json-Jwt

Name of the Vulnerable Software and Affected Versions: json-jwt gem versions prior to 1.11.0 Description: The issue is related to the json-jwt gem for Ruby, where it lacks an element count during the splitting of a JWE string. This lack of element count can lead to potential security issues...

Debian DSA-4283-1 : ruby-json-jwt - security update

It was discovered that ruby-json-jwt, a Ruby implementation of JSON web tokens performed insufficient validation of GCM auth tags. C Tenable Network Security, Inc. The descriptive text and package checks in this plugin were extracted from Debian Security Advisory DSA-4283. The text itself is...

[SECURITY] [DSA 4283-1] ruby-json-jwt security update

------------------------------------------------------------------------- Debian Security Advisory DSA-4283-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff August 31, 2018 https://www.debian.org/security/faq -...

Debian: Security Advisory (DSA-4283-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2018 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Json-jwt did not verify the cryptographic signature for data

The json-jwt rubygem version = 0.5.0 && 1.9.4 contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability in Decryption of AES-GCM encrypted JSON Web Tokens that can result in Attacker can forge a authentication tag. This attack appear to be exploitable via network...

CVE-2018-1000539

Nov json-jwt version = 0.5.0 && 1.9.4 contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability in Decryption of AES-GCM encrypted JSON Web Tokens that can result in Attacker can forge a authentication tag. This attack appear to be exploitable via network connectivity. Th...

CVE-2018-1000539

Nov json-jwt version = 0.5.0 && 1.9.4 contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability in Decryption of AES-GCM encrypted JSON Web Tokens that can result in Attacker can forge a authentication tag. This attack appear to be exploitable via network connectivity. Th...

CVE-2018-1000539

CVE-2018-1000539 affects the ruby-json-jwt gem (versions >=0.5.0 and

CVE-2018-1000539

Nov json-jwt version = 0.5.0 && 1.9.4 contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability in Decryption of AES-GCM encrypted JSON Web Tokens that can result in Attacker can forge a authentication tag. This attack appear to be exploitable via network connectivity. Th...

Authentication Bypass

json-jwt is vulnerable to authentication bypasses. The library does not properly validate the GCM auth tag length, allowing a malicious user to require at most 256 attempts to forge a valid auth tag...

Auth tag forgery vulnerability with AES-GCM encrypted JWT

Ruby's OpenSSL bindings do not check the length of the supplied authentication tag when decrypting an authenticated encryption mode such as AES-GCM, leaving this up to the authors of a gem/app to implement for properly validating the message. json-jwt was not checking for the authentication tag...

Denial Of Service (DoS)

json-jwt is vulnerable to denial of service DoS attacks. A malicious attacker can cause a denial of service when decoding the jwt-json signatures. This is unsafe because the tokens are stored as symbols that allocates memory to a string but is not removed by the garbage collection after being use...

Timing Attack

json-jwt is vulnerable to timing attacks. The library is vulnerable because they do not compare signatures in constant-time, which allows malicious users to use the timing of the request to progressively identify a valid signatures...