Reddit Terminal Viewer up to 1.18.x URL inspect_webbrowser.py BROWSER injection

Summaryinfo

A vulnerability was found in Reddit Terminal Viewer up to 1.18.x. It has been rated as critical. The affected element is an unknown function of the file scripts/inspect_webbrowser.py of the component URL Handler. This manipulation of the argument BROWSER as part of Environment Variable causes injection. This vulnerability is tracked as CVE-2017-17516. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Reddit Terminal Viewer up to 1.18.x and classified as critical. Affected by this vulnerability is an unknown function of the file scripts/inspect_webbrowser.py of the component URL Handler. The manipulation of the argument BROWSER as part of a Environment Variable leads to a injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

scripts/inspect_webbrowser.py in Reddit Terminal Viewer (RTV) 1.19.0 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 disclosed 12/14/2017 (Website). The advisory is shared at security-tracker.debian.org. This vulnerability is known as CVE-2017-17516 since 12/11/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1055 for this issue.

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.

Upgrading to version 1.19.0 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• Reddit Terminal Viewer

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18

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CPE 2.2info

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