In Nim 1.2.4, the standard library httpClient is vulnerable to a CR-LF injection in the target URL. An injection is possible if the attacker controls any part of the URL provided in a call (such as httpClient.get or httpClient.post), the User-Agent header value, or custom HTTP header names or values.
Weakness
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Nim | Nim-lang | * | 1.2.6 (including) |
| Nim | Ubuntu | bionic | * |
| Nim | Ubuntu | devel | * |
| Nim | Ubuntu | esm-apps/noble | * |
| Nim | Ubuntu | focal | * |
| Nim | Ubuntu | groovy | * |
| Nim | Ubuntu | hirsute | * |
| Nim | Ubuntu | impish | * |
| Nim | Ubuntu | lunar | * |
| Nim | Ubuntu | mantic | * |
| Nim | Ubuntu | noble | * |
| Nim | Ubuntu | oracular | * |
| Nim | Ubuntu | plucky | * |
| Nim | Ubuntu | questing | * |
| Nim | Ubuntu | trusty | * |
| Nim | Ubuntu | xenial | * |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/10.html
- https://cwe.mitre.org/data/definitions/101.html
- https://cwe.mitre.org/data/definitions/105.html
- https://cwe.mitre.org/data/definitions/108.html
- https://cwe.mitre.org/data/definitions/120.html
- https://cwe.mitre.org/data/definitions/13.html
- https://cwe.mitre.org/data/definitions/135.html
- https://cwe.mitre.org/data/definitions/14.html
- https://cwe.mitre.org/data/definitions/24.html
- https://cwe.mitre.org/data/definitions/250.html
- https://cwe.mitre.org/data/definitions/267.html
- https://cwe.mitre.org/data/definitions/273.html
- https://cwe.mitre.org/data/definitions/28.html
- https://cwe.mitre.org/data/definitions/3.html
- https://cwe.mitre.org/data/definitions/34.html
- https://cwe.mitre.org/data/definitions/42.html
- https://cwe.mitre.org/data/definitions/43.html
- https://cwe.mitre.org/data/definitions/45.html
- https://cwe.mitre.org/data/definitions/46.html
- https://cwe.mitre.org/data/definitions/47.html
- https://cwe.mitre.org/data/definitions/51.html
- https://cwe.mitre.org/data/definitions/52.html
- https://cwe.mitre.org/data/definitions/53.html
- https://cwe.mitre.org/data/definitions/6.html
- https://cwe.mitre.org/data/definitions/64.html
- https://cwe.mitre.org/data/definitions/67.html
- https://cwe.mitre.org/data/definitions/7.html
- https://cwe.mitre.org/data/definitions/71.html
- https://cwe.mitre.org/data/definitions/72.html
- https://cwe.mitre.org/data/definitions/76.html
- https://cwe.mitre.org/data/definitions/78.html
- https://cwe.mitre.org/data/definitions/79.html
- https://cwe.mitre.org/data/definitions/8.html
- https://cwe.mitre.org/data/definitions/80.html
- https://cwe.mitre.org/data/definitions/83.html
- https://cwe.mitre.org/data/definitions/84.html
- https://cwe.mitre.org/data/definitions/9.html
References
- http://www.openwall.com/lists/oss-security/2021/02/04/2
- https://consensys.net/diligence/vulnerabilities/nim-httpclient-header-crlf-injection/
- https://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/httpclient.nim#L1023
- https://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.html
- http://www.openwall.com/lists/oss-security/2021/02/04/2
- https://consensys.net/diligence/vulnerabilities/nim-httpclient-header-crlf-injection/
- https://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/httpclient.nim#L1023
- https://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.html