CVE-2020-15692

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.

CVSS v3.1 NVD

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

CVSS v2.0 NVD

10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS

4.21% chance of exploitation in the next 30 days, 91st percentile

Published

2020-08-14

Updated

2024-08-04

Proof-of-concept exploits (1)

• http://www.openwall.com/lists/oss-security/2021/02/04/1

Security advisories

• https://consensys.net/diligence/vulnerabilities/nim-browsers-argument-injection
• nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/browsers.nim#L48
• https://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.html

References

• CVE Record
• NVD entry