SaltStack Salt Incomplete Fix path traversal

Summaryinfo

A vulnerability, which was classified as problematic, was found in SaltStack Salt. This affects an unknown function of the component Incomplete Fix. The manipulation results in path traversal. This vulnerability is known as CVE-2017-14695. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in SaltStack Salt (affected version not known). It has been classified as problematic. Affected is some unknown functionality of the component Incomplete Fix. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, and integrity. CVE summarizes:

Directory traversal vulnerability in minion id validation in SaltStack Salt before 2016.3.8, 2016.11.x before 2016.11.8, and 2017.7.x before 2017.7.2 allows remote minions with incorrect credentials to authenticate to a master via a crafted minion ID. NOTE: this vulnerability exists because of an incomplete fix for CVE-2017-12791.

The bug was discovered 10/11/2017. The weakness was published 10/24/2017 (Website). The advisory is shared for download at lists.opensuse.org. This vulnerability is traded as CVE-2017-14695 since 09/22/2017. It is possible to launch the attack remotely. A authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

The vulnerability was handled as a non-public zero-day exploit for at least 9 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 104086 (openSUSE Security Update : salt (openSUSE-2017-1182)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170462 (OpenSUSE Security Update for salt (openSUSE-SU-2017:2822-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (104086). Similar entry is available at VDB-108601. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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• SaltStack Salt

License

• open-source

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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