Nim 1.2.4 httpClient httpClient.get/httpClient.post HTTP Header injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.9$0-$5k0.00

A vulnerability was found in Nim 1.2.4. It has been declared as critical. This vulnerability affects the function httpClient.get/httpClient.post of the component httpClient. The manipulation as part of a HTTP Header leads to a privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-74. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was released 08/14/2020 (Website). The advisory is available at nim-lang.org. This vulnerability was named CVE-2020-15693 since 07/13/2020. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/10/2020).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Entries connected to this vulnerability are available at 159945 and 159947.

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CPE 2.3infoedit

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CVSSv3infoedit

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.9

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2infoedit

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-74
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfoedit

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfoedit

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfoedit

07/13/2020 🔍
08/14/2020 +32 days 🔍
08/16/2020 +2 days 🔍
11/10/2020 +86 days 🔍

Sourcesinfoedit

Advisory: nim-lang.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-15693 (🔍)
See also: 🔍

Entryinfoedit

Created: 08/16/2020 08:35 AM
Updated: 11/10/2020 07:16 AM
Changes: (1) advisory_confirm_url
Complete: 🔍

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