Opera Web Browser up to 57.0 DLL shcore.dll ZIP Archive untrusted search path

Summaryinfo

A vulnerability was found in Opera Web Browser up to 57.0 and classified as critical. The affected element is an unknown function in the library shcore.dll of the component DLL Handler. Executing a manipulation as part of ZIP Archive can lead to untrusted search path. The identification of this vulnerability is CVE-2018-18913. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Opera Web Browser up to 57.0 (Web Browser). This vulnerability affects an unknown code in the library shcore.dll of the component DLL Handler. The manipulation as part of a ZIP Archive leads to a untrusted search path vulnerability. The CWE definition for the vulnerability is CWE-426. The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Opera before 57.0.3098.106 is vulnerable to a DLL Search Order hijacking attack where an attacker can send a ZIP archive composed of an HTML page along with a malicious DLL to the target. Once the document is opened, it may allow the attacker to take full control of the system from any location within the system. The issue lies in the loading of the shcore.dll and dcomp.dll files: these files are being searched for by the program in the same system-wide directory where the HTML file is executed.

The weakness was shared 03/21/2019 (Website). The advisory is available at blogs.opera.com. This vulnerability was named CVE-2018-18913 since 11/02/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1574 by the MITRE ATT&CK project.

Upgrading to version 57.0.3098.106 eliminates this vulnerability.

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Productinfo

Type

• Web Browser

Vendor

• Opera

Name

• Web Browser

Version

• 57.0

License

• free

Website

• Vendor: https://www.opera.com/

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