PT-2018-14772 · Simplemde · Simplemde

Nanshihui · Published 2018-11-07 · Updated 2018-12-12 · CVE-2018-19057

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions SimpleMDE version 1.11.2

Description The issue concerns a mishandling of certain input characters, specifically [ and (, during the construction of an A element, and an onerror attribute of a crafted IMG element. This can lead to XSS.

Recommendations For SimpleMDE version 1.11.2, consider disabling the handling of [ and ( characters in input until a patch is available. Restrict access to the A element construction and IMG element handling to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2018-19057

GHSA-WG85-P6J7-GP3W

Affected Products

Simplemde

References · 6

• 🔥 https://github.com/sparksuite/simplemde-markdown-editor/issues/721 · Exploit
• https://osv.dev/vulnerability/CVE-2018-19057 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-19057 · Security Note
• https://osv.dev/vulnerability/GHSA-wg85-p6j7-gp3w · Vendor Advisory
• https://github.com/sparksuite/simplemde-markdown-editor · Note
• https://github.com/advisories/GHSA-wg85-p6j7-gp3w · Note