PT-2019-12044 · Facebook+1 · Yarn+1

Publicado 2019-12-16 · Atualizado 2020-05-21 · CVE-2019-10773

Positive Technologies (AI Summary)

CVSS v3.1

7.8

Alta

Vetor base

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

Name of the Vulnerable Software and Affected Versions Yarn versions prior to 1.21.1

Description The package install functionality in Yarn can be exploited to create arbitrary symlinks on the host filesystem. This can be achieved by using specially crafted "bin" keys. Depending on the current user's permission set, existing files could be overwritten.

Recommendations For versions prior to 1.21.1, update to version 1.21.1 or later to resolve the issue. As a temporary workaround, consider restricting the package install functionality until the update is applied.

Exploit

Correção

OS Command Injection

Link Following

Enumeração de Fraquezas

CWE-78

CWE-59

Identificadores relacionados

ALT-PU-2020-1415

ALT-PU-2020-1988

CVE-2019-10773

GHSA-5XF4-F2FQ-F69J

SNYK-JS-YARN-537806

Produtos afetados

Alt Linux

Yarn

Referências · 22

• 🔥 https://github.com/yarnpkg/yarn/issues/7761#issuecomment-565493023 · Exploit
• 🔥 https://blog.daniel-ruf.de/critical-design-flaw-npm-pnpm-yarn · Exploit
• https://github.com/yarnpkg/yarn/commit/039bafd74b7b1a88a53a54f8fa6fa872615e90e7 · Correção
• https://github.com/yarnpkg/yarn/pull/7755 · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2019-10773 · Nota de Segurança
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-10773 · Aviso do Fabricante
• https://ubuntu.com/security/CVE-2019-10773 · Aviso do Fabricante
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITY5BC63CCC647DFNUQRQ5AJDKUKUNBI · Aviso do Fabricante
• https://security-tracker.debian.org/tracker/CVE-2019-10773 · Aviso do Fabricante
• https://access.redhat.com/errata/RHSA-2020:0475 · Aviso do Fabricante
• https://osv.dev/vulnerability/BELL-CVE-2019-10773 · Aviso do Fabricante
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3HIZW4NZVV5QY5WWGW2JRP3FHYKZ6ZJ5 · Aviso do Fabricante
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/ITY5BC63CCC647DFNUQRQ5AJDKUKUNBI · Aviso do Fabricante
• https://snyk.io/vuln/SNYK-JS-YARN-537806, · Nota
• https://cve.org/CVERecord?id=CVE-2019-10773 · Nota de Segurança