PT-2019-12910 · Nextcloud · Nextcloud Extract Add-On

Publicado 2019-06-05 · Atualizado 2019-06-06 · CVE-2019-12739

Positive Technologies (AI Summary)

CVSS v3.1

9.0

Crítica

Vetor base

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

Name of the Vulnerable Software and Affected Versions Nextcloud Extract add-on versions prior to 1.2.0

Description The issue allows for remote code execution via shell metacharacters in a RAR filename. This is achieved through the ajax/extractRar.php endpoint, specifically using the nameOfFile and directory parameters.

Recommendations For versions prior to 1.2.0, update to version 1.2.0 or later to resolve the issue. As a temporary workaround, consider restricting access to the ajax/extractRar.php endpoint until the update is applied. Avoid using the nameOfFile and directory parameters in the affected endpoint until the issue is resolved.

Exploit

Correção

OS Command Injection

Enumeração de Fraquezas

CWE-78

Identificadores relacionados

CVE-2019-12739

Produtos afetados

Nextcloud Extract Add-On

Referências · 4

• 🔥 https://hackerone.com/reports/546753 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2019-12739 · Nota de Segurança
• https://secsignal.org/news/a-tale-of-rce-nextcloud-extract-app · Nota
• https://osv.dev/vulnerability/CVE-2019-12739 · Aviso do Fabricante