Vulnerability identifier: #VU37002

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-12907

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
rclone
Other software / Other software solutions

Vendor: rclone.org

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

In Rclone 1.42, use of "rclone sync" to migrate data between two Google Cloud Storage buckets might allow attackers to trigger the transmission of any URL's content to Google, because there is no validation of a URL field received from the Google Cloud Storage API server, aka a "RESTLESS" issue.

Mitigation
Install update from vendor's website.

Vulnerable software versions

rclone: 1.42

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External links
http://openwall.com/lists/oss-security/2018/06/27/3
http://www.danieldent.com/blog/restless-vulnerability-non-browser-cross-domain-http-request-attacks/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.