CVE-2018-16477
Exposure of Sensitive Information to an Unauthorized Actor in activestorage
6.5
MEDIUM
CVSS 3.1
EPSS 0.26%
Description
A bypass vulnerability in Active Storage >= 5.2.0 for Google Cloud Storage and Disk services allow an attacker to modify the `content-disposition` and `content-type` parameters which can be used in with HTML files and have them executed inline. Additionally, if combined with other techniques such as cookie bombing and specially crafted AppCache manifests, an attacker can gain access to private signed URLs within a specific storage path. This vulnerability has been fixed in version 5.2.1.1.
How to fix CVE-2018-16477
To remediate CVE-2018-16477, upgrade the affected package to a fixed version below.
- —upgrade to 2:5.2.2+dfsg-1 or later
- —upgrade to 5.2.1.1 or later
Is CVE-2018-16477 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2:5.2.2+dfsg-1
- >= 5.2.0, < 5.2.1.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |