PT-2018-9333 · Erusev · Parsedown

Aidantwoods · Publicado 2018-04-18 · Atualizado 2022-03-30 · CVE-2018-1000162

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Média

Vetor base

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

Name of the Vulnerable Software and Affected Versions Parsedown versions prior to 1.7.0

Description The issue concerns a Cross Site Scripting (XSS) vulnerability in the setMarkupEscaped function for escaping HTML, which can result in JavaScript code execution. This can be exploited via specially crafted markdown that allows it to bypass HTML escaping by breaking Abstract Syntax Tree (AST) boundaries.

Recommendations For versions prior to 1.7.0, update to version 1.7.0 or later to resolve the issue. As a temporary workaround, consider restricting the use of the setMarkupEscaped function until a patch is available. Avoid using specially crafted markdown that can break AST boundaries in the affected function until the issue is resolved.

Exploit

Correção

XSS

Enumeração de Fraquezas

CWE-79

Identificadores relacionados

CVE-2018-1000162

GHSA-QGPV-86R3-87FH

Produtos afetados

Parsedown

Referências · 7

• 🔥 https://github.com/FriendsOfPHP/security-advisories/blob/master/erusev/parsedown/CVE-2018-1000162.yaml · Exploit
• https://github.com/erusev/parsedown · Nota
• https://github.com/erusev/parsedown/pull/495 · Nota
• https://github.com/Roave/SecurityAdvisories/issues/44#issuecomment-368594409 · Nota
• https://osv.dev/vulnerability/CVE-2018-1000162 · Aviso do Fabricante
• https://osv.dev/vulnerability/GHSA-qgpv-86r3-87fh · Aviso do Fabricante
• https://nvd.nist.gov/vuln/detail/CVE-2018-1000162 · Nota de Segurança