Elixir Plug up to 1.0.3/1.1.6/1.2.2/1.3.1 Plug.Static NULL Byte access control

Summaryinfo

A vulnerability, which was classified as critical, has been found in Elixir Plug up to 1.0.3/1.1.6/1.2.2/1.3.1. The affected element is an unknown function of the component Plug.Static. This manipulation as part of NULL Byte causes access control. This vulnerability is registered as CVE-2017-1000052. The attack needs to be launched locally. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Elixir Plug up to 1.0.3/1.1.6/1.2.2/1.3.1. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component Plug.Static. The manipulation as part of a NULL Byte leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Elixir Plug before v1.0.4, v1.1.7, v1.2.3 and v1.3.2 is vulnerable to null byte injection in the Plug.Static component, which may allow users to bypass filetype restrictions.

The bug was discovered 03/01/2017. The weakness was published 07/17/2017 (Website). It is possible to read the advisory at elixirforum.com. This vulnerability is known as CVE-2017-1000052 since 07/10/2017. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 138 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 1.0.4, 1.1.7, 1.2.3 or 1.3.2 eliminates this vulnerability.

Similar entry is available at VDB-103616. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• Elixir Plug

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.1.0
• 1.1.1
• 1.1.2
• 1.1.3
• 1.1.4
• 1.1.5
• 1.1.6
• 1.2.0
• 1.2.1
• 1.2.2
• 1.3.0
• 1.3.1

CPE 2.3info

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CPE 2.2info

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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