CVE-2020-15692

CRITICAL

Nim 1.2.4 - Command Injection

Title source: llm

Description

In Nim 1.2.4, the standard library browsers mishandles the URL argument to browsers.openDefaultBrowser. This argument can be a local file path that will be opened in the default explorer. An attacker can pass one argument to the underlying open command to execute arbitrary registered system commands.

References (4)

[Exploit, Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2021/02/04/1

[Exploit, Third Party Advisory] https://consensys.net/diligence/vulnerabilities/nim-browsers-argument-injection/

[Patch, Third Party Advisory] https://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/browsers.nim#L48

View Patch ZIP pw:eip

[Release Notes, Third Party Advisory] https://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.html

Scores

CVSS v3 9.8

EPSS 0.0209

EPSS Percentile 83.8%

Attack Vector NETWORK

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

Classification

CWE

CWE-88

Status published

Affected Products (1)

nim-lang/nim < 1.2.6

Timeline

Published Aug 14, 2020

Tracked Since Feb 18, 2026