CVE-2020-15694

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 v3.0 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:P/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.html	Release Notes Third Party Advisory
https://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/httpclient.nim#L241	Patch Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/02/04/2	Exploit Mailing List Third Party Advisory
https://consensys.net/diligence/vulnerabilities/nim-httpclient-header-crlf-injection/	Exploit Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:nim-lang:nim:*:*:*:*:*:*:*:*

Information

Published : 2020-08-14 12:15

Updated : 2021-02-08 12:39

NVD link : CVE-2020-15694

Mitre link : CVE-2020-15694

JSON object : View

CWE

CWE-20

Improper Input Validation

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Products Affected

nim-lang

nim

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