TIN up to 2.4.0 URL tools/url_handler.pl BROWSER injection ⚔ [Disputed]

Summaryinfo

A vulnerability marked as critical has been reported in TIN up to 2.4.0. Affected is an unknown function of the file tools/url_handler.pl of the component URL Handler. The manipulation of the argument BROWSER as part of Environment Variable leads to injection. This vulnerability is documented as CVE-2017-17520. The attack can be initiated remotely. There is not any exploit available. There are still doubts about whether this vulnerability truly exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in TIN up to 2.4.0. It has been rated as critical. This issue affects an unknown code of the file tools/url_handler.pl of the component URL Handler. The manipulation of the argument BROWSER as part of a Environment Variable leads to a injection vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

** DISPUTED ** tools/url_handler.pl in TIN 2.4.1 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. NOTE: a third party has reported that this is intentional behavior, because the documentation states "url_handler.pl was designed to work together with tin which only issues shell escaped absolute URLs."

The weakness was released 12/14/2017 (Website). The advisory is shared at security-tracker.debian.org. The identification of this vulnerability is CVE-2017-17520 since 12/11/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. 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 real existence of this vulnerability is still doubted at the moment.

Upgrading to version 2.4.1 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• TIN

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4.0

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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