CVE-2020-15694 Information

Description

In Nim 1.2.4 the standard library httpClient fails to properly validate the server response. For example httpClient.get().contentLength() does not raise any error if a malicious server provides a negative Content-Length.

CVSS Vector

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

Reference

https://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/httpclient.nimL241 https://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5