#VU45740 CRLF injection in nim - CVE-2020-15693
Published: August 17, 2020
Vulnerability identifier: #VU45740
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-15693
CWE-ID: CWE-93
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
nim
nim
Software vendor:
nim-lang.org
nim-lang.org
Description
The vulnerability allows a remote attacker to inject arbitrary data in server response.
The vulnerability exists due to insufficient validation of attacker-supplied data when processing URL in the standard library httpClient. A remote attacker can pass a specially crafted URL to the application and changes values of headers via CR-LF characters when processed with httpClient.get or httpClient.post methods.
Remediation
Install updates from vendor's website.