PT-2018-4733 · None · Jwt-Simple

Publicado 2018-05-31 · Atualizado 2019-10-09 · CVE-2016-10555

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Média

Vetor base

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions jwt-simple versions 0.3.0 and earlier

Description The issue allows a malicious user to choose the algorithm sent to the server, potentially bypassing authentication. If the server expects RSA but receives HMAC-SHA with RSA's public key, it may incorrectly interpret the public key as an HMAC private key, enabling the forging of any desired data. This behavior can be exploited to modify the contents of a JWT while still passing verification, resulting in a complete authentication bypass.

Recommendations Update to version 0.3.1 or later. Always specify an algorithm in calls to decode().

Exploit

Correção

RCE

Enumeração de Fraquezas

CWE-20

CWE-310

Identificadores relacionados

CVE-2016-10555

GHSA-VGRX-W6RG-8FQF

Produtos afetados

Jwt-Simple

Referências · 10

• 🔥❌ https://github.com/thepcn3rd/jwtToken-CVE-2016-10555 · Exploit, Deleted
• https://github.com/hokaccha/node-jwt-simple/pull/14 · Nota
• https://github.com/hokaccha/node-jwt-simple/commit/957957cfa44474049b4603b293569588ee9ffd97 · Nota
• https://github.com/hokaccha/node-jwt-simple/pull/16 · Nota
• https://npmjs.com/advisories/87 · Nota
• https://osv.dev/vulnerability/CVE-2016-10555 · Aviso do Fabricante
• https://nvd.nist.gov/vuln/detail/CVE-2016-10555 · Nota de Segurança
• https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries · Nota
• https://osv.dev/vulnerability/GHSA-vgrx-w6rg-8fqf · Aviso do Fabricante
• https://nodesecurity.io/advisories/87 · Nota