CVE Vulnerability

CVE-2021-41259

Nim is a systems programming language with a focus on efficiency, expressiveness, and elegance. In affected versions the uri.parseUri function which may be used to validate URIs accepts null bytes in the input URI. This behavior could be used to bypass URI validation. For example: parseUri("http://localhosthello").hostname is set to "localhosthello". Additionally, httpclient.getContent accepts null bytes in the input URL and ignores any data after the first null byte. Example: getContent("http://localhosthello") makes a request to localhost:80. An attacker can use a null bytes to bypass the check and mount a SSRF attack.

7.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/nim-lang/security/security/advisories/GHSA-3gg2-rw3q-qwgc Exploit Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:nim-lang:nim:1.2.12:*:*:*:*:*:*:*
cpe:2.3:a:nim-lang:nim:1.4.4:*:*:*:*:*:*:*
cpe:2.3:a:nim-lang:nim:1.4.6:*:*:*:*:*:*:*
cpe:2.3:a:nim-lang:nim:1.4.8:*:*:*:*:*:*:*
cpe:2.3:a:nim-lang:nim:1.6.0:*:*:*:*:*:*:*
Information

Published : 2021-11-12 06:15

Updated : 2021-11-17 03:45

NVD link : CVE-2021-41259

Mitre link : CVE-2021-41259

Products Affected
No products.
CWE
CWE-918

Server-Side Request Forgery (SSRF)