CVE-2022-39338

Stored cross site scripting (XSS) vulnerability via Authorization Endpoint in user_oidc

CVSS 3.5 LOWEPSS 0.6%CWE-20 CWE-79

Vexday Risk Score

8Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 3.5EPSS 0.6%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

25 nov 2022Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

user_oidc is an OpenID Connect user backend for Nextcloud. Versions prior to 1.2.1 did not properly validate discovery urls which may lead to a stored cross site scripting attack vector. The impact is limited due to the restrictive CSP that is applied on this endpoint. Additionally this vulnerability has only been shown to be exploitable in the Safari web browser. This issue has been addressed in version 1.2.1. Users are advised to upgrade. Users unable to upgrade should urge their users to avoid using the Safari web browser.

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N

Produtos afetados

nextcloud · security-advisories

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Referências

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-5fpw-795h-rg57 https://github.com/nextcloud/user_oidc/pull/496 https://hackerone.com/reports/1687410