Metview up to 4.7.2 URL etc/ObjectList BROWSER injection

Summaryinfo

A vulnerability was found in Metview up to 4.7.2. It has been declared as critical. Impacted is an unknown function of the file etc/ObjectList of the component URL Handler. The manipulation of the argument BROWSER as part of Environment Variable results in injection. This vulnerability is identified as CVE-2017-17515. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Metview up to 4.7.2. Affected is some unknown processing of the file etc/ObjectList of the component URL Handler. The manipulation of the argument BROWSER as part of a Environment Variable leads to a injection vulnerability. CWE is classifying the issue as CWE-74. 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

etc/ObjectList in Metview 4.7.3 does not validate strings before launching the program specified by the BROWSER environment variable, which might allow remote attackers to conduct argument-injection attacks via a crafted URL.

The bug was discovered 12/11/2017. The weakness was released 12/14/2017 (Website). The advisory is shared for download at security-tracker.debian.org. This vulnerability is traded as CVE-2017-17515 since 12/11/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1055.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 257933 (Linux Distros Unpatched Vulnerability : CVE-2017-17515), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.7.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (257933). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• Metview

Version

• 4.7.0
• 4.7.1
• 4.7.2

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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