Impact: Important Public Date: 2019-03-27 CWE: CWE-94 Bugzilla: 1697482: CVE-2019-10842 rubygem-bootstrap-sass: backdoor code allows arbitrary code execution when downloaded from rubygems.org Arbitrary code execution (via backdoor code) was discovered in bootstrap-sass 3.2.0.3, when downloaded from rubygems.org. An unauthenticated attacker can craft the ___cfduid cookie value with base64 arbitrary code to be executed via eval(), which can be leveraged to execute arbitrary code on the target system. Note that there are three underscore characters in the cookie name. This is unrelated to the __cfduid cookie that is legitimately used by Cloudflare.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2019-10842 from the MITRE CVE dictionary dictionary and NIST NVD.
Red Hat CloudForms is not affected by this issue, since the only affected version of bootstrap-sass gem is the 3.2.0.3 and CloudForms only ships version 3.3.7.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 9.8 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | High |
Vulmon